92-83-1

Basic information

• Product Name: Xanthene
• Synonyms: 10H-9-Oxaanthracene;9H-Xanthene;Dibenzo[a,e]pyran;Dibenzopyran, tricyclic;Xanthane;DIBENZOPYRAN;XANTHAN;XANTHENE
• CAS NO: 92-83-1
• Molecular Formula: C₁₃H₁₀O
• Molecular Weight: 182.22
• EINECS: 202-194-4
• Product Categories: Intermediates;Alcohol& Phenol& Ethers;Heterocyclic Building Blocks;O-Containing;Others
• Mol File: 92-83-1.mol
• Article Data: 71

Chemical Properties

• Melting Point: 101-102 °C(lit.)
• Boiling Point: 310-312 °C(lit.)
• Flash Point: 137.5°C
• Appearance: off-white crystals
• Density: 1.0368 (rough estimate)
• Vapor Pressure: 0.00106mmHg at 25°C
• Refractive Index: 1.5994 (estimate)
• Storage Temp.: Sealed in dry,Room Temperature
• Water Solubility: soluble
• Stability: Stable. Combustible. Incompatible with oxidizing agents.
• BRN: 133939
• CAS DataBase Reference: Xanthene(CAS DataBase Reference)
• NIST Chemistry Reference: Xanthene(92-83-1)
• EPA Substance Registry System: Xanthene(92-83-1)

Safety Data

• Hazard Codes: Xn
• Statements: 42/43
• Safety Statements: 22-36/37-45-24-36/37/39
• WGK Germany: 3
• RTECS: ZD5520000
• Hazardous Substances Data: 92-83-1(Hazardous Substances Data)

Usage

Chemical Properties

solid

Uses

Different sources of media describe the Uses of 92-83-1 differently. You can refer to the following data:
1. Xanthene is useful for the preparation of CoIV-?Dinitrate Complex.
2. Organic synthesis, fungicide.

Definition

Different sources of media describe the Definition of 92-83-1 differently. You can refer to the following data:
1. The central structure of the fluoroscein, eosin, and rhodamine dyes.
2. A yellow crystalline organic compound, used in making dyestuffs and fungicides.
3. xanthene: A heterocyclic compoundhaving three fused rings withone oxygen atom, C13H10O; m.p.101–102°C b.p. 310–312°C. The ringstructure is present in a class of xanthene dyes.

General Description

Xanthene (10H-9-oxaanthracene) is a heterocyclic compound generally used as an important building block in organic synthesis. It is a core moiety of many dyes like?fluorescein, eosins, and rhodamines.

Purification Methods

Crystallise dibenzopyran from *benzene, MeOH or EtOH. [Beilstein 17 H 73, 17 I 30, 17 II 72, 17 III/IV 614, 17/2 V 252.]

InChI:InChI=1/C13H10O/c1-3-7-12-10(5-1)9-11-6-2-4-8-13(11)14-12/h1-8H,9H2

Synthetic route

xanth-9-one (90-47-1) → xanthene (92-83-1)

Conditions	Yield
With molybdenum trisulfide; hydrogen In octane at 240℃; under 75006 Torr; for 1.5h;	98%
Stage #1: xanth-9-one With aluminum (III) chloride; lithium aluminium tetrahydride Stage #2: Acidic conditions;	94%
With sodium bis(2-methoxyethoxy)aluminium dihydride In toluene at 23 - 60℃; for 3h; Solvent; Temperature; Inert atmosphere;	90%

9-hydroxyxanthene (90-46-0) + aniline (62-53-3) → xanthene (92-83-1) + xanth-9-one (90-47-1) + phenyl-xanthen-9-yl-amine (33564-61-3)

Conditions	Yield
methyltrioxorhenium(VII) In benzene for 48h; Ambient temperature;	A n/a B n/a C 96%

9H-xanthene-9-thione (492-21-7) → xanthene (92-83-1)

Conditions	Yield
With phenylphosphane at 140℃; for 10h;	93%
With disodium telluride In tetrahydrofuran; N,N-dimethyl-formamide for 48h; Heating;	82%
With diphosphorus tetraiodide In benzene for 9h; Heating;	56%

2-(phenoxy)benzaldehyde (19434-34-5) → xanthene (92-83-1)

Conditions	Yield
With indium(III) triflate In di-isopropyl ether at 95℃; for 24h; Inert atmosphere; Sealed tube;	86%
With titanium tetrachloride In dichloromethane at 20℃; for 24h;	85%

10H-dibenzo[b,e]iodinin-5-ium trifluoromethanesulfonate → xanthene (92-83-1)

Conditions	Yield
With water; copper diacetate; sodium carbonate In N,N-dimethyl-formamide at 100℃; for 12h; Inert atmosphere; Sealed tube;	85%

2,7-di-tert-butyl-xanthene (190837-45-7) → 2-tert-butylxanthene (38731-86-1) + xanthene (92-83-1)

Conditions	Yield
With Nafion-H; toluene for 24h; Heating;	A n/a B 80%

9-hydroxyxanthene (90-46-0) → xanthene (92-83-1) + xanth-9-one (90-47-1)

Conditions	Yield
With manganese triacetate In acetic acid for 2h; Heating;	A 17% B 73%
With iodine In acetonitrile at 20℃; for 0.0833333h;	A 43% B 42%
With 2-oxoindole; 1,3-dichloro-1,1,3,3-tetrabutylstannoxane In dichloromethane at 20℃; for 10h;	A 42% B 13%

9-hydroxyxanthene (90-46-0) + tert.-butylhydroperoxide (75-91-2) → xanthene (92-83-1) + xanth-9-one (90-47-1) + (tert-butyl)xanthyl peroxy-ether (71269-25-5) + dixanthyl ether (6538-19-8)

Conditions	Yield
With 2-Picolinic acid In pyridine; acetic acid at 20℃; for 1h; Title compound not separated from byproducts;	A 22% B 66% C 34% D 18%

9-hydroxyxanthene (90-46-0) → xanthene (92-83-1) + xanth-9-one (90-47-1) + (tert-butyl)xanthyl peroxy-ether (71269-25-5) + dixanthyl ether (6538-19-8)

Conditions	Yield
With 2-Picolinic acid; tert.-butylhydroperoxide In pyridine; acetic acid at 20℃; for 1h; Title compound not separated from byproducts;	A 22% B 66% C 34% D 18%

bis(2-oxocyclohexyl)methane (3137-39-1) → xanthene (92-83-1) + o-(α-cyclohexylmethyl)phenol (5899-19-4)

Conditions	Yield
platinum on activated charcoal at 340 - 360℃;	A 65% B 3.6%

4-morpholinecarboxaldehyde (4394-85-8) + 2-(trimethylsilyl)phenyl trifluoromethanesulfonate (88284-48-4) → xanthene (92-83-1) + xanth-9-one (90-47-1) + CF3O3S(1-)*C20H26N3O2(1+)

Conditions	Yield
With cesium fluoride In acetonitrile at 20℃; for 14h;	A 15% B 23% C 62%

2-(trimethylsilyl)phenyl trifluoromethanesulfonate (88284-48-4) + N,N-dimethyl-formamide (68-12-2, 33513-42-7) → xanthene (92-83-1) + xanth-9-one (90-47-1) + CF3O3S(1-)*C16H22N3(1+)

Conditions	Yield
With cesium fluoride In acetonitrile at 20℃; for 13h;	A 16% B 24% C 62%

Xanthylium perchlorate (2567-19-3) → xanthene (92-83-1)

Conditions	Yield
With 1,3-benzodithiole In tetrahydrofuran at 80℃;	60%
With N-ethyl-N,N-diisopropylamine In pyridine for 1h; Heating;	57%
With N-ethyl-N,N-diisopropylamine Mechanism;
Multi-step reaction with 2 steps 2: 56 percent / diisopropylethylamine / pyridine / 1 h / Heating View Scheme
With isopropyl alcohol In acetonitrile at 60℃; Kinetics; Reagent/catalyst;

2,7-di-tert-butyl-xanthene (190837-45-7) → xanthene (92-83-1) + xanth-9-one (90-47-1)

Conditions	Yield
With aluminium trichloride; toluene for 12h; Ambient temperature;	A 60% B 25%

N,N-dimethylthioformamide (758-16-7) + 2-(trimethylsilyl)phenyl trifluoromethanesulfonate (88284-48-4) → xanthene (92-83-1) + xanth-9-one (90-47-1) + diphenyl sulfide (139-66-2) + CF3O3S(1-)*C16H22N3(1+)

Conditions	Yield
With cesium fluoride In acetonitrile at 20℃; for 13h;	A 10% B 12% C 60% D 60%

9-hydroxyxanthene (90-46-0) + 3-phenyloxindole (3456-79-9, 123742-97-2) → xanthene (92-83-1) + xanth-9-one (90-47-1) + C27H19NO2

Conditions	Yield
With 1,3-bis(3,5-bis(trifluoro-ethyl)phenyl)thiourea In dichloromethane at 20℃; for 24h; Reagent/catalyst;	A n/a B n/a C 59%

xanth-9-one (90-47-1) → 9-hydroxyxanthene (90-46-0) + xanthene (92-83-1)

Conditions	Yield
With potassium hydroxide; zinc In dimethyl sulfoxide at 30℃;	A 58.5% B 37%
With potassium hydroxide; zinc In dimethyl sulfoxide at 30℃;	A 58% B 37.5%
With iodine; magnesium In methanol at 20℃; for 2.5h;	A 33% B 22%
With sodium tetrahydroborate; nickel dichloride In tetrahydrofuran at 20℃; for 4h;	A n/a B 32%

(9H-xanthene-9-yl) triphenyl phosphonium perchlorate (22730-67-2) → xanthene (92-83-1)

Conditions	Yield
With N-ethyl-N,N-diisopropylamine In pyridine for 1h; Heating;	56%

cyclohexenone (930-68-7) + salicylaldehyde (90-02-8) → xanthene (92-83-1)

Conditions	Yield
With scandium tris(trifluoromethanesulfonate) In chlorobenzene at 180℃; for 0.5h; Microwave irradiation;	56%

9-hydroxyxanthene (90-46-0) → xanthene (92-83-1)

Conditions	Yield
With gallium(III) triflate; isopropyl alcohol for 12h; Glovebox; Reflux;	54%
With iodine; magnesium In methanol at 20℃; for 0.75h;

1,1-Diphenylethylene (530-48-3) + monomethyl 2-(9-xanthenyl)malonate (887583-30-4) → xanthene (92-83-1) + xanth-9-one (90-47-1) + 2-methoxycarbonyl-4,4-diphenyl-2-(9-xanthenyl)-4-butanolide (1152712-90-7) + 10-(methoxycarbonyl)dibenzoxepin (141221-89-8)

Conditions	Yield
With manganese triacetate In acetic acid for 0.166667h; Reflux;	A 5% B 12% C 31% D 51%

Spiro (37044-85-2) → 3,4-dimethylthiophene (632-15-5) + xanthene (92-83-1) + 2,3-Dimethyl-2-butene (563-79-1) + 9H-xanthene-9-thione (492-21-7) + 9,9'-bixanthene (4381-14-0) + 2,3-dimethyl-buta-1,3-diene (513-81-5)

Conditions	Yield
at 240 - 260℃; for 0.333333h; Product distribution;	A 23 % Spectr. B 25% C 8 % Spectr. D 50% E 18% F 26 % Spectr.

Spiro (37044-85-2) → xanthene (92-83-1) + 9H-xanthene-9-thione (492-21-7) + 9,9'-bixanthene (4381-14-0) + 2,3-dimethyl-buta-1,3-diene (513-81-5)

Conditions	Yield
at 240 - 260℃; for 0.333333h; Further byproducts given;	A 25% B 50% C 18% D 26 % Spectr.

9-xanthylium (261-23-4) → xanthene (92-83-1)

Conditions	Yield
With 1-Benzyl-1,4-dihydronicotinamide In water; acetonitrile at 25℃; Kinetics; Thermodynamic data; Mechanism; pH=6.90, ionic strength of 1.0; ΔH(excit.), ΔS(excit.); various reagents are used;	50%
With potassium chloride; 1,4-dihydropyridine-1-phenyl-3-carboxamide In phosphate buffer; acetonitrile at 25℃; pH=6.90; Kinetics; Further Variations:; Reagents;
With 1,4-dihydropyridine-1-phenyl-3-carboxamide In water; acetonitrile at 20℃; for 16h;

monomethyl 2-(9-xanthenyl)malonate (887583-30-4) → xanthene (92-83-1) + xanth-9-one (90-47-1) + 10-(methoxycarbonyl)dibenzoxepin (141221-89-8)

Conditions	Yield
With water; manganese triacetate; copper(ll) bromide In acetic acid for 0.0833333h; Reflux;	A 23% B 25% C 49%

salicylaldehyde (90-02-8) + 2-(trimethylsilyl)phenyl trifluoromethanesulfonate (88284-48-4) → xanthene (92-83-1) + xanth-9-one (90-47-1)

Conditions	Yield
With cesium fluoride In acetonitrile at 20℃; for 15h;	A 42% B 46%

2-(phenoxy)benzaldehyde (19434-34-5) → xanthene (92-83-1) + xanth-9-one (90-47-1)

Conditions	Yield
With titanium tetrachloride In dichloromethane at 20℃; for 24h;	A 42% B 45.4%

7-(4-Aminophenyl)-1,3,5-cycloheptatrien (54099-03-5) + Xanthylium perchlorate (2567-19-3) → xanthene (92-83-1) + N-[4-(cyclohepta-2,4,6-trien-1-yl)phenyl]-9H-xanthen-9-imine

Conditions	Yield
With 1H-imidazole In tetrahydrofuran at 20℃; for 2.5h;	A n/a B 44%

Spiro (35977-66-3) → 3,4-dimethylthiophene (632-15-5) + xanthene (92-83-1) + 9,9'-bixanthene (4381-14-0) + 3,4-Dimethyl-2-(9'-xanthenyl)thiophen (74250-10-5)

Conditions	Yield
In benzene for 10h; Product distribution; Heating;	A n/a B n/a C n/a D 38%
In benzene for 10h; Heating;	A n/a B n/a C n/a D 38%

2-hydroxytricyclo[7.3.1.02.7]tridecan-13-one (2544-00-5) → xanthene (92-83-1) + o-Benzylphenol (28994-41-4)

Conditions	Yield
platinum on activated charcoal at 280 - 300℃;	A 32% B 35%

xanthene (92-83-1) → xanth-9-one (90-47-1)

Conditions	Yield
With tert.-butylhydroperoxide; pentafluorobenzeneseleninic acid In benzene for 4h; Heating;	100%
With aluminum oxide; potassium permanganate at 120℃; for 0.2h; Irradiation;	100%
With potassium permanganate; manganese(II) sulfate In dichloromethane at 20℃; for 24h;	100%

xanthene (92-83-1) + trans-2-methyl-3-phenyl-1-tosylaziridine → ε-9-<2-Methyl-1-phenyl-2-(tosylamino)ethyl>xanthene

Conditions	Yield
With n-butyllithium In tetrahydrofuran for 0.05h; Ambient temperature;	99%

xanthene (92-83-1) + 1-ethyl-4-phenylquinazolin-2(1H)-one (26831-07-2) → 1-Ethyl-4-phenyl-4-(9H-xanthen-9-yl)-3,4-dihydro-1H-quinazolin-2-one (128487-79-6)

Conditions	Yield
In benzene for 15h; Ambient temperature; Irradiation;	99%

xanthene (92-83-1) + cyclohexanecarbaldehyde (2043-61-0) → cyclohexyl-(9H-xanthen-9-yl)-methanol

Conditions	Yield
Stage #1: xanthene With n-butyllithium at -50℃; Stage #2: cyclohexanecarbaldehyde	99%

xanthene (92-83-1) + 1-bromo-4-tert-butylbenzene (3972-65-4) → 9-(4-tert-butylphenyl)xanthene (1393444-71-7)

Conditions	Yield
With KN(SiMe3)2; palladium diacetate; nixantphos In cyclopentyl methyl ether at 24℃; for 12h; Inert atmosphere;	99%
With bis(1,5-cyclooctadiene)nickel (0); sodium hexamethyldisilazane; nixantphos at 110℃; for 16h;	81%

xanthene (92-83-1) + cis-2,3-diphenyl-N-benzenesulphonylaziridine (110143-77-6) → θ-9-<2-<(Phenylsulfonyl)amino>-1,2-diphenylethyl>xanthene

Conditions	Yield
With n-butyllithium In tetrahydrofuran for 0.0833333h; Ambient temperature;	98%

xanthene (92-83-1) + 4-(p-tolyl)-1H-[1,2,3]triazole (5301-96-2) → 4-(p-tolyl)-1-(9H-xanthen-9-yl)-1H-1,2,3-triazole

Conditions	Yield
With methanesulfonic acid; tetrabutylammonium tetrafluoroborate In acetonitrile at 20℃; for 2h; Electrochemical reaction;	98%

xanthene (92-83-1) + 3-phenyldibenzo[b,d]thiophene 5,5-dioxide → 2-phenylspiro[fluorene-9,9'-xanthene]

Conditions	Yield
With potassium hexamethylsilazane In 1,4-dioxane; toluene at 80℃; for 16h; Inert atmosphere;	97%

xanthene (92-83-1) + 3,7-diphenyldibenzo[b,d]thiophene 5,5-dioxide → 2,7-diphenylspiro[fluorene-9,9'-xanthene]

Conditions	Yield
With potassium hexamethylsilazane In 1,4-dioxane; toluene at 80℃; for 16h; Inert atmosphere;	97%

1,2,4-Triazole (288-88-0) + xanthene (92-83-1) → 1-(9H-xanthen-9-yl)-1H-1,2,4-triazole

Conditions	Yield
With dibenzoyl peroxide In 1,2-dichloro-ethane at 80℃; for 6h; Schlenk technique;	97%
With tetrabutylammonium perchlorate In acetonitrile at 23℃; for 2.9h; Electrochemical reaction;	94%

1,2,3-Benzotriazole (95-14-7) + xanthene (92-83-1) → 1-(9H-xanthen-9-yl)-1H-benzo[d][1,2,3]triazole (150458-04-1)

Conditions	Yield
With dibenzoyl peroxide In 1,2-dichloro-ethane at 80℃; for 6h; Mechanism; Reagent/catalyst; Solvent; Temperature; Schlenk technique;	96%
With tetrabutylammonium perchlorate In acetonitrile at 23℃; for 3.1h; Electrochemical reaction;	78%
With methanesulfonic acid; tetrabutylammonium tetrafluoroborate In acetonitrile at 20℃; for 2h; Electrochemical reaction;	72%
With 2,3-dicyano-5,6-dichloro-p-benzoquinone In toluene for 2h; Heating;	20%

xanthene (92-83-1) + 1-cinnamoyl-2,2-dimethylaziridine (126437-19-2) → N-(2-Methyl-allyl)-3-phenyl-3-(9H-xanthen-9-yl)-propionamide

Conditions	Yield
With n-butyllithium In tetrahydrofuran for 24h; Ambient temperature;	96%

xanthene (92-83-1) + 1-methyl-4-phenyl-1,2-dihydroquinazol-2-one (17629-04-8) → 1-Methyl-4-phenyl-4-(9H-xanthen-9-yl)-3,4-dihydro-1H-quinazolin-2-one (128487-74-1)

Conditions	Yield
In benzene Product distribution; Mechanism; Ambient temperature; Irradiation; other hydrogen donors; other solvents and reaction time; also with addition of t-stilbene;	96%
In benzene for 15h; Ambient temperature; Irradiation;	96%

xanthene (92-83-1) + diethyl malonate (105-53-3) → 9-(1'-ethoxycarbonyl-2'-oxo-3'-oxapent-1'-yl)xanthene (13210-18-9)

Conditions	Yield
With oxygen at 25℃; for 12h; Irradiation;	96%
With trifluorormethanesulfonic acid; oxygen In dichloromethane at 20 - 25℃; under 45004.5 Torr; for 64h; Autoclave;	39%
With trifluorormethanesulfonic acid; oxygen In dichloromethane at 20 - 25℃; under 45004.5 Torr; for 144h;	39%

1,2,3-trimethoxybenzene (621-23-8) + xanthene (92-83-1) → 9-(2',4',6'-trimethoxyphenyl)-9H-xanthene (102599-53-1)

Conditions	Yield
With tert.-butylhydroperoxide; methanesulfonic acid In decane; acetone at 40℃; for 18h; Solvent;	96%
With trifluorormethanesulfonic acid; oxygen In dichloromethane at 70℃; under 75007.5 Torr; for 24h;	80%
With palladium diacetate; copper(II) bis(trifluoromethanesulfonate) at 130℃; for 3h;	45%

xanthene (92-83-1) + N-(phenylthio)succinimide (14204-24-1) → 2-(phenylthio)-9H-xanthene (1541160-54-6)

Conditions	Yield
With palladium diacetate; trifluoroacetic acid at 20℃; for 0.75h;	96%

xanthene (92-83-1) + 4-t-butylbenzenethiol (2396-68-1) → 9-[(4-tert-butylphenyl)sulfanyl]-9H-xanthene

Conditions	Yield
With air In ethanol at 20℃; for 24h; Green chemistry;	96%
With air In ethanol at 20℃; for 24h; Schlenk technique;	96%

4-ethoxycarbonylpyrazole (37622-90-5) + xanthene (92-83-1) → ethyl 1-(9H-xanthen-9-yl)-1H-pyrazole-4-carboxylate

Conditions	Yield
With dibenzoyl peroxide In 1,2-dichloro-ethane at 80℃; for 6h; Schlenk technique;	96%

xanthene (92-83-1) + acetyl chloride (75-36-5) → 2,7-diacetylxanthene (55389-88-3)

Conditions	Yield
With aluminium trichloride In 1,2-dichloro-ethane for 3h; Ambient temperature;	95%
With carbon disulfide; aluminium trichloride

chloro-trimethyl-silane (75-77-4) + xanthene (92-83-1) → trimethyl(9H-xanthen-9-yl)silane (67274-34-4)

Conditions	Yield
With n-butyllithium In tetrahydrofuran; hexane for 2h; Ambient temperature;	95%
With n-butyllithium In diethyl ether	81%
Stage #1: xanthene With n-butyllithium In tetrahydrofuran at -78℃; for 2h; Inert atmosphere; Stage #2: chloro-trimethyl-silane In tetrahydrofuran for 3h; Inert atmosphere;	70%

trimethylene oxide (503-30-0) + xanthene (92-83-1) → 3-(9H-xanthen-9-yl)-propan-1-ol (648928-44-3)

Conditions	Yield
Stage #1: xanthene With n-butyllithium at 20℃; for 1h; Stage #2: trimethylene oxide	95%

xanthene (92-83-1) + 1-phenyl-acetone (103-79-7) → rac-9-(1'-phenyl-2'-oxoprop-1'-yl)xanthene (71312-30-6)

Conditions	Yield
With methanesulfonic acid; oxygen at 40℃; under 750.075 Torr; for 5h; Neat (no solvent); Sealed vial;	95%

xanthene (92-83-1) + 3,7-dimethoxydibenzo[b,d]thiophene 5,5-dioxide → 2,7-dimethoxyspiro[fluorene-9,9'-xanthene]

Conditions	Yield
With potassium hexamethylsilazane In 1,4-dioxane; toluene at 80℃; for 16h; Inert atmosphere;	95%

2,6-dimethylbenzene-1-thiol (118-72-9) + xanthene (92-83-1) → 9-((2,6-dimethylphenyl)thio)-9H-xanthene

Conditions	Yield
With air In ethanol at 20℃; for 24h; Green chemistry;	95%

xanthene (92-83-1) + 3,4-dimethylthiophenol (18800-53-8) → 9-((3,4-dimethylphenyl)thio)-9H-xanthene

Conditions	Yield
With air In ethanol at 20℃; for 24h; Green chemistry;	95%

NH-pyrazole (288-13-1) + xanthene (92-83-1) → 1-(9H-xanthen-9-yl)-1H-pyrazole

Conditions	Yield
With dibenzoyl peroxide In 1,2-dichloro-ethane at 80℃; for 6h; Schlenk technique;	95%

xanthene (92-83-1) → 2,7-dibromo-9H-xanthene (40102-87-2)

Conditions	Yield
With bromine; acetic anhydride; acetic acid at 20℃; for 2h; Inert atmosphere; Cooling with ice;	94%
With bromine In chloroform	38.1%

xanthene (92-83-1) + cyclohexanone (108-94-1) → (±)-9-(1'-oxo-2'-cyclohexyl)xanthene (71312-27-1)

Conditions	Yield
With methanesulfonic acid; oxygen at 40℃; under 750.075 Torr; for 36h; Neat (no solvent); Sealed vial;	94%
With oxygen at 40℃; for 24h; Sealed tube;	91%
With oxygen at 25℃; for 3h; Reagent/catalyst; Wavelength; Temperature; Irradiation;	91%
With methanesulfonic acid; tetrabutylammonium tetrafluoroborate In methanol; acetonitrile at 20℃; for 2h; Electrochemical reaction;	68%

Upstream product

• 719-41-5 1-hydroxy-9H-xanthen-9-one 
• 82-07-5 xanthene-9-carboxylic acid 
• 35977-66-3 Spiro 
• 519-73-3 triphenylmethane 
• 2567-19-3 Xanthylium perchlorate 
• 108-95-2 phenol 
• 139-02-6 sodium phenoxide 
• 67-56-1 methanol 
• 7446-70-0 aluminium trichloride 
• 95-48-7 ortho-cresol 
• 835-11-0 2,2'-dihydroxybenzophenone 
• 10034-85-2 hydrogen iodide 
• 90-46-0 9-hydroxyxanthene 
• 822-36-6 4-methyl-1H-imidazole 

Downstream Products

• 65855-34-7 2-tert-butyl-2-phenyl-aziridine 
• 4381-14-0 9,9'-bixanthene 
• 98943-92-1 9-benzoylxanthene 
• 126179-55-3 N-(3,3-dimethyl-2-phenylbutyl)benzamide 
• 90-47-1 xanth-9-one 
• 84-11-7 9,10-phenanthrenequinone 
• 7783-06-4 hydrogen sulfide 
• 726-18-1 4,4'-dianisylmethane 
• 1370523-97-9 3-hydroxy-5-methyl-2-(9H-xanthen-9-yl)cyclohex-2-en-1-one 
• 102599-53-1 9-(2',4',6'-trimethoxyphenyl)-9H-xanthene 
• 1370523-99-1 tert-butyl rac-4,4-dimethyl-3-oxo-2-(9H-xanthen-9-yl)pentanoate 
• 1370524-05-2 rac-2-(9H-xanthen-9-yl)pentanoic acid 
• 1370524-00-7 benzyl rac-3-oxo-2-(9H-xanthen-9-yl)butanoate 
• 17902-20-4 rac-9-(1',3'-dioxocyclohex-2'-yl)-9H-xanthene 

Relevant articles and documents

Carbenium Ions in Substitution Reactions at the Amino Nitrogen Atom

Tropylium, xanthylium, and tritylium salts characterized by different stabilities differently reacted with biologically active amines. The reactions of tropylium perchlorate and tetrafluoroborate with 4-(cyclohepta-2,4,6-trien-1-yl)aniline was accompanied

Method for reducing carbonyl reduction to methylene under illumination

The invention belongs to the technical field of organic chemical synthesis. The method comprises the following steps: (1) mixing the carbonyl compound and the amine compound in a solvent, reacting 3 - 6 under the illumination of 380 - 456 nm, the reaction system is low in toxicity, high in atom utilization rate 12 - 24h. and production efficiency, safe and controllable in reaction process and capable of simplifying the operation in the preparation and production process. At the same time, the residue toxicity of the reaction is minimized, the pollution caused by the production process to the environment is reduced, and the steps and operations of removing residues after the reaction are simplified. In addition, the reactant feedstock is readily available. The reactant does not need additional modification before the reaction, can be directly used for preparing production, simplifies the operation steps, and shortens the reaction route. The production cost is obviously reduced.

Formation and Disproportionation of Xanthenols to Xanthenes and Xanthones and Their Use in Synthesis

A facile and versatile strategy employing TiCl4-mediated cyclization followed by a Cannizzaro reaction has been developed for the synthesis of various xanthene derivatives. The reaction proceeded smoothly to afford both xanthenes/xanthones or their sulfur derivatives and tolerated a wide range of electronically diverse substrates. Using this methodology, pranoprofen was synthesized in three steps in 59% overall yield from commercially available starting materials.