915095-87-3

Basic information

• Product Name: (2-Chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]methanone
• Synonyms: (2-Chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]methanone;Methanone, (2-chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]-;(S)-(2-chloro-5-iodophenyl)(4-(tetrahydrofuran-3-yloxy)phenyl)Methanone
• CAS NO: 915095-87-3
• Molecular Formula: C₁₇H₁₄ClIO₃
• Molecular Weight: 428.64873
• Mol File: 915095-87-3.mol
• Article Data: 11

Chemical Properties

• Boiling Point: 526℃
• Flash Point: 272℃
• Appearance: /
• Density: 1.639
• Storage Temp.: under inert gas (nitrogen or Argon) at 2–8 °C
• Solubility: Chloroform (Slightly), DMSO (Slightly), Ethyl Acetate (Slightly)
• CAS DataBase Reference: (2-Chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]methanone(CAS DataBase Reference)
• NIST Chemistry Reference: (2-Chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]methanone(915095-87-3)
• EPA Substance Registry System: (2-Chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]methanone(915095-87-3)

Safety Data

• Hazardous Substances Data: 915095-87-3(Hazardous Substances Data)

Usage

Uses

(2-Chloro-5-iodophenyl)[4-[[(3S)-tetrahydro-3-furanyl]oxy]phenyl]methanone is an intermediate of Empagliflozin (E521510) which is a potent and selective SGLT-2 inhibitor that improves glycaemic control syndrome in diabetic rats.

Synthesis

To a solution of the fluoride VIII.1 (208kg), tetrahydrofuran (407kg) and (S)-3- hydroxytetrahydrofuran (56kg) is added potassium-terf-butanolate solution (20%) in tetrahydrofuran (388kg) within 3 hrs at 16 to 25°C temperature. After completion of the addition, the mixture is stirred for 60min at 20°C temperature. Then the conversion is determined via HPLC analysis. Water (355kg) is added within 20 min at a temperature of 21 °C (aqueous quench). The reaction mixture is stirred for 30 min (temperature: 20°C). The stirrer is switched off and the mixture is left stand for 60 min (temperature: 20°C). The phases are separated and solvent is distilled off from the organic phase at 19 to 45°C temperature under reduced pressure. 2- Propanol (703kg) is added to the residue at 40 to 46°C temperature and solvent is distilled off at 41 to 50°C temperature under reduced pressure. 2-Propanol (162kg) is added to the residue at 47°C temperature and solvent is distilled off at 40 to 47°C temperature under reduced pressure. Then the mixture is cooled to 0°C within 1 hr 55 min. The product is collected on a centrifuge, washed with a mixture of 2- propanol (158kg) and subsequently with terf.-butylmethylether (88kg) and dried at 19 to 43°C under reduced pressure. 227kg (91 ,8%) of product are obtained as colourless solid. The identity of the product is determined via infrared spectrometry.

Synthetic route

(2-chloro-5-iodophenyl)(4-fluorophenyl)methanone (915095-86-2) + (S)-3-hydroxytetyrahydrofurane (86087-23-2) → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
With potassium tert-butylate In tetrahydrofuran at 16 - 25℃; for 3h;	91.8%
Stage #1: (2-chloro-5-iodophenyl)(4-fluorophenyl)methanone; (S)-3-hydroxytetyrahydrofurane With potassium tert-butylate In tetrahydrofuran at 16 - 25℃; for 4h; Stage #2: With water at 20 - 21℃; for 1.83333h;	91.8%
With potassium tert-butylate In tetrahydrofuran at 16 - 25℃; for 4h; Industry scale;	91.8%

(2-chloro-5-iodophenyl)(4-hydroxyphenyl)methanone (1459754-40-5) + (R)-tetrahydrofuran-3-yl 4-methylbenzenesulfonate (219823-47-9) → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
With potassium carbonate; potassium iodide In acetonitrile at 50 - 55℃;	87%

2-chloro-5-iodobenzoic acid (19094-56-5) + (S)-3-phenoxytetrahydrofuran → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
Stage #1: 2-chloro-5-iodobenzoic acid With oxalyl chloride In dichloromethane; N,N-dimethyl-formamide at 20℃; for 4h; Friedel-Crafts Acylation; Stage #2: (S)-3-phenoxytetrahydrofuran With aluminum (III) chloride In dichloromethane; N,N-dimethyl-formamide at 0 - 20℃; for 3h;	81%

fluorobenzene (462-06-6) → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: oxalyl dichloride / N,N-dimethyl-formamide / 5 h / 25 - 30 °C 2: potassium tert-butylate / tetrahydrofuran / 3 h / 16 - 25 °C View Scheme
Multi-step reaction with 2 steps 1.1: oxalyl dichloride / N,N-dimethyl-formamide / 5 h / 25 - 30 °C 1.2: 6 h / 20 - 30 °C 2.1: potassium tert-butylate / tetrahydrofuran / 4 h / 16 - 25 °C 2.2: 1.83 h / 20 - 21 °C View Scheme
Multi-step reaction with 2 steps 1: oxalyl dichloride; aluminum (III) chloride / N,N-dimethyl-formamide / 25 - 45 °C / Industry scale 2: potassium tert-butylate / tetrahydrofuran / 4 h / 16 - 25 °C / Industry scale View Scheme
Multi-step reaction with 2 steps 1.1: oxalyl dichloride; N,N-dimethyl-formamide / dichloromethane / 3 h 1.2: 1 h / 0 - 5 °C 2.1: potassium tert-butylate / tetrahydrofuran / 1 h / 16 - 25 °C View Scheme

2-chloro-5-iodobenzoic acid (19094-56-5) → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: oxalyl dichloride / N,N-dimethyl-formamide / 5 h / 25 - 30 °C 2: potassium tert-butylate / tetrahydrofuran / 3 h / 16 - 25 °C View Scheme
Multi-step reaction with 2 steps 1.1: oxalyl dichloride / N,N-dimethyl-formamide / 5 h / 25 - 30 °C 1.2: 6 h / 20 - 30 °C 2.1: potassium tert-butylate / tetrahydrofuran / 4 h / 16 - 25 °C 2.2: 1.83 h / 20 - 21 °C View Scheme
Multi-step reaction with 2 steps 1: oxalyl dichloride; aluminum (III) chloride / N,N-dimethyl-formamide / 25 - 45 °C / Industry scale 2: potassium tert-butylate / tetrahydrofuran / 4 h / 16 - 25 °C / Industry scale View Scheme

2-chloro-5-iodobenzoylchloride (281652-58-2) → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: aluminum (III) chloride / 1 h / 0 - 25 °C 2: potassium tert-butylate / tetrahydrofuran / 0.5 h / 7 - 10 °C View Scheme
Multi-step reaction with 2 steps 1: aluminum (III) chloride / 25 °C / Inert atmosphere 2: potassium tert-butylate / tetrahydrofuran / 2 - 10 °C View Scheme
Multi-step reaction with 2 steps 1: aluminum (III) chloride / dichloromethane / 6 h / -5 °C 2: potassium tert-butylate / tetrahydrofuran / 20 °C View Scheme

phenol (108-95-2) → (S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3)

Conditions	Yield
Multi-step reaction with 2 steps 1: polyposphoric acid / 50 - 85 °C 2: potassium iodide; potassium carbonate / acetonitrile / 50 - 55 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (3S)-3-[4-[(2-chloro-5-iodophenyl)methyl]phenoxy]tetrahydrofuran (915095-94-2)

Conditions	Yield
With aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane In toluene at 0 - 23℃; for 2.5h;	93%
With aluminum (III) chloride; sodium tetrahydroborate In tetrahydrofuran for 5h; Reflux;	90%
With potassium borohydride; trifluoroacetic acid In tetrahydrofuran at 0 - 20℃; for 0.5h;	85%

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C17H16Cl2MgO2

Conditions	Yield
Multi-step reaction with 2 steps 1: 1,1,3,3-Tetramethyldisiloxane / aluminum (III) chloride / toluene / 2.5 h / 18 - 26 °C 2: TurboGrignard / tetrahydrofuran / 1.83 h / -15 - 21 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → empagliflozin (864070-44-0)

Conditions	Yield
Multi-step reaction with 2 steps 1.1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 18 - 26 °C 2.1: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.83 h / -21 - -15 °C 2.2: 2.92 h / -25 - -13 °C View Scheme
Multi-step reaction with 2 steps 1.1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 18 - 26 °C / Industry scale 1.2: 20 - 51 °C / Industry scale 2.1: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.83 h / -21 - -15 °C / Industry scale 2.2: 2.92 h / -25 - -18 °C / Industry scale 2.3: -13 - 19 °C / Industry scale View Scheme
Multi-step reaction with 5 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: aluminum (III) chloride; triethylsilane / dichloromethane; acetonitrile / 0.5 h / 20 - 25 °C View Scheme
Multi-step reaction with 5 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: methanesulfonic acid / 20 - 30 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere 4: methanesulfonic acid / 20 - 25 °C 5: triethylsilane; boron trifluoride diethyl etherate / dichloromethane; acetonitrile / -40 - 20 °C / Inert atmosphere View Scheme
Multi-step reaction with 5 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: triethylamine / dichloromethane / 0 - 35 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere 4: methanesulfonic acid / 0 - 35 °C 5: triethylsilane; boron trifluoride diethyl etherate / dichloromethane; acetonitrile / -40 - 20 °C / Inert atmosphere View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C35H59ClO8Si4

Conditions	Yield
Multi-step reaction with 2 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C24H29ClO8

Conditions	Yield
Multi-step reaction with 3 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (2S,3R,4S,5S,6R)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-6-(hydroxymethyl)-2-methoxytetrahydro-2H-pyran-3,4,5-triol (1279691-36-9)

Conditions	Yield
Multi-step reaction with 4 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (2S,3R,4S,5R,6R)-6-(acetoxymethyl)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-2-methoxytetrahydro-2H-pyran-3,4,5-triyl triacetate

Conditions	Yield
Multi-step reaction with 5 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: triethylamine; dmap / tetrahydrofuran View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (2S,3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-6-((benzyloxy)methyl)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-2-methoxytetrahydro-2H-pyran

Conditions	Yield
Multi-step reaction with 5 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (2S,3R,4S,5R,6R)-3,4,5-tris(allyloxy)-6-((allyloxy)methyl)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-2-methoxytetrahydro-2H-pyran

Conditions	Yield
Multi-step reaction with 5 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)tetrahydro-2H-pyran-3,4,5-trityl triacetate + C31H35ClO11

Conditions	Yield
Multi-step reaction with 6 steps 1.1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2.1: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3.1: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4.1: hydrogenchloride / isopropyl alcohol; methanol 5.1: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide 6.1: triethylsilane; boron trifluoride diethyl etherate / dichloromethane; acetonitrile / 0.5 h / 15 - 20 °C 6.2: 90 °C View Scheme
Multi-step reaction with 6 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: triethylamine; dmap / tetrahydrofuran 6: aluminum (III) chloride; triethylsilane / dichloromethane; acetonitrile / 0.5 h / 15 - 20 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → 2,3,4,6-tetra-O-benzyl-1-deoxy-1-((S)-(4-chloro-3-(4-(tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-β-D-glucopyranose + C51H51ClO7

Conditions

Yield

Multi-step reaction with 6 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide 6: aluminum (III) chloride; triethylsilane / dichloromethane; acetonitrile / 0.5 h / 15 - 20 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → 1-chloro-4-(2,3,4,6-tetra-O-allyl-D-glucopyranos-1-yl)-2-(4-(S)-tetrahydrofuran-3-yloxy-benzyl)-benzene + C35H43ClO7

Conditions

Yield

Multi-step reaction with 6 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide 6: triethylsilane; boron trifluoride diethyl etherate / dichloromethane; acetonitrile / 0.5 h / 15 - 20 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C23H27ClO7

Conditions

Yield

Multi-step reaction with 6 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: boron trifluoride diethyl etherate / water 6: triethylsilane View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C23H27ClO8

Conditions	Yield
Multi-step reaction with 5 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4: hydrogenchloride / isopropyl alcohol; methanol 5: boron trifluoride diethyl etherate / water View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (2R,3R,4R,5S,6R)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol

Conditions	Yield
Multi-step reaction with 6 steps 1.1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2.1: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C 3.1: hydrogenchloride / isopropyl alcohol / 5 h / 38 - 42 °C / pH 2 4.1: hydrogenchloride / isopropyl alcohol; methanol 5.1: sodium hydride / tetrahydrofuran; N,N-dimethyl-formamide 6.1: triethylsilane; boron trifluoride diethyl etherate / dichloromethane; acetonitrile / 0.5 h / 15 - 20 °C 6.2: 90 °C View Scheme
Multi-step reaction with 4 steps 1.1: sodium tetrahydroborate; aluminum (III) chloride / tetrahydrofuran / 5 h / Reflux 2.1: n-butyllithium / toluene / 3 h / -20 °C / Inert atmosphere 2.2: 1 h / 0 °C / Inert atmosphere 3.1: toluene / 6 h / 110 °C / Inert atmosphere 4.1: sodium methylate; methanol / 5 h / Reflux View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → (1R,2S,3R,4R,5S)-1-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)hexane-1,2,3,4,5,6-hexaol

Conditions	Yield
Multi-step reaction with 2 steps 1: aluminum (III) chloride; 1,1,3,3-Tetramethyldisiloxane / toluene / 2.5 h / 0 - 23 °C 2: isopropylmagnesium chloride; lithium chloride / tetrahydrofuran / 1.5 h / -20 - 10 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C17H16ClIO3

Conditions	Yield
With sodium tetrahydroborate In ethanol at 20 - 25℃;	98 g

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C20H24ClIO3Si

Conditions	Yield
Multi-step reaction with 2 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: triethylamine / dichloromethane / 0 - 35 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C18H18ClIO3

Conditions	Yield
Multi-step reaction with 2 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: methanesulfonic acid / 20 - 30 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C38H67ClO9Si5

Conditions	Yield
Multi-step reaction with 3 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: triethylamine / dichloromethane / 0 - 35 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C25H31ClO9

Conditions	Yield
Multi-step reaction with 4 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: methanesulfonic acid / 20 - 30 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere 4: methanesulfonic acid / 20 - 25 °C View Scheme
Multi-step reaction with 4 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: triethylamine / dichloromethane / 0 - 35 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere 4: methanesulfonic acid / 0 - 35 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C36H61ClO9Si4

Conditions	Yield
Multi-step reaction with 3 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: methanesulfonic acid / 20 - 30 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C24H29ClO9

Conditions	Yield
Multi-step reaction with 4 steps 1: sodium tetrahydroborate / ethanol / 20 - 25 °C 2: methanesulfonic acid / 20 - 30 °C 3: n-butyllithium / tetrahydrofuran; hexane / -75 - -70 °C / Inert atmosphere 4: hydrogenchloride; water / methanol / 20 - 25 °C View Scheme

(S)-(2-chloro-5-iodophenyl)(4-((tetrahydrofuran-3-yl)oxy)phenyl)methanone (915095-87-3) → C43H59ClO11

Conditions	Yield
Multi-step reaction with 3 steps 1.1: sodium tetrahydroborate; aluminum (III) chloride / tetrahydrofuran / 5 h / Reflux 2.1: n-butyllithium / toluene / 3 h / -20 °C / Inert atmosphere 2.2: 1 h / 0 °C / Inert atmosphere 3.1: toluene / 6 h / 110 °C / Inert atmosphere View Scheme

Upstream product

• 637-87-6 1-Chloro-4-iodobenzene 
• 27522-79-8 p-hydroxybenzoylethylamine 
• 25804-49-3 tert-butyl 4-hydroxybenzoate 
• 17696-62-7 Phenyl 4-hydroxybenzoate 
• 19094-56-5 2-chloro-5-iodobenzoic acid 
• 108-95-2 phenol 
• 1459754-40-5 (2-chloro-5-iodophenyl)(4-hydroxyphenyl)methanone 
• 219823-47-9 (R)-tetrahydrofuran-3-yl 4-methylbenzenesulfonate 
• 281652-58-2 2-chloro-5-iodobenzoylchloride 
• 462-06-6 fluorobenzene 
• 915095-86-2 (2-chloro-5-iodophenyl)(4-fluorophenyl)methanone 
• 86087-23-2 (S)-3-hydroxytetyrahydrofurane 

Downstream Products

• 1279691-36-9 (2S,3R,4S,5S,6R)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-6-(hydroxymethyl)-2-methoxytetrahydro-2H-pyran-3,4,5-triol 
• 2069942-68-1 (2S,3R,4S,5R,6R)-6-(acetoxymethyl)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-2-methoxytetrahydro-2H-pyran-3,4,5-triyl triacetate 
• 915095-99-7 (2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)tetrahydro-2H-pyran-3,4,5-trityl triacetate 
• 915095-99-7 C₃₁H₃₅ClO₁₁ 
• 1620758-33-9 (2R,3R,4R,5S,6R)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol 
• 1620758-34-0 (1R,2S,3R,4R,5S)-1-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)hexane-1,2,3,4,5,6-hexaol 

Relevant articles and documents

Preparation process of empagliflozin intermediate

The invention discloses a preparation process of an empagliflozin intermediate, and relates to the technical field of biological pharmacy, the process comprises the following steps: taking a compound of a formula d structure and s-3-hydroxytetrahydrofuran (namely a compound e) as initial raw materials, dehydrating to obtain a compound of a formula c structure; sequentially adding alkali metal and a chlorination reagent to obtain a compound b; further performing Friedel-Crafts reaction with a compound with a structure as shown in a formula f under the catalytic action of Lewis acid to synthesize a compound with a structure as shown in a formula a; and finally, carrying out reduction reaction to obtain a target compound with a structure shown in a formula g. The preparation method is low in cost, easy to operate, less in wastewater, easy in post-treatment, high in yield, high in product purity and suitable for industrial production.

Dicyclic derivative of glucoside as well as preparation method and application of dicyclic derivative

The invention relates to a dicyclic derivative of glucoside as well as a preparation method and the application of the dicyclic derivative. Specifically, the invention relates to a compound as shown in Formula I, a stereisomer or pharmaceutically acceptable salt or ester of the compound, a pharmaceutical composition of the compound, and application of the compound in preparation of drugs for treating diabetes or relevant diseases.

Empagliflozin intermediate, and preparation method and application thereof

The invention provides an empagliflozin intermediate. The structural formula of the empagliflozin intermediate is shown in the description. The invention also provides a preparation method of the empagliflozin intermediate, and an application of the empagliflozin intermediate in the preparation of empagliflozin. The empagliflozin key intermediate provided by the invention is pivaloyl protected empagliflozin, and empagliflozin can be obtained by removing the above protection group from the intermediate.