(4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

Base Information

Chemical Name:(4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester
CAS No.:148843-19-0
Molecular Formula:C₁₅H₁₇NO₄
Molecular Weight:275.304
Hs Code.:

Synonyms:(4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

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Chemical Property of (4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

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Technology Process of (4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

There total 16 articles about (4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 99.0%

: 148843-18-9
(4S,5S)-4-Hydroxymethyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

: 148843-19-0
(4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

Guidance literature:: With oxalyl dichloride; dimethyl sulfoxide; triethylamine; In dichloromethane; at -78 ℃; for 3h;
DOI:10.1021/jo0268916

Reference yield:

: 148906-20-1
(4R,5S)-5-isopropyl-2-phenyl-4,5-dihydrooxazole-4-carboxylic acid methyl ester

: 148843-19-0
(4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

Guidance literature:: Multi-step reaction with 2 steps

1.1: LiHMDS / tetrahydrofuran / 1 h / -78 °C

1.2: 81 percent / tetrahydrofuran; diethyl ether / 3 h / -78 °C

2.1: 99 percent / (COCl)2; DMSO; Et₃N / CH₂Cl₂ / 3 h / -78 °C

With oxalyl dichloride; dimethyl sulfoxide; triethylamine; lithium hexamethyldisilazane; In tetrahydrofuran; dichloromethane; 2.1: Swern oxidation;
DOI:10.1021/jo0268916

Reference yield:

: 227946-96-5
(para-bromophenyl)-4-methyl-2-(E)-pentenoate

: 148843-19-0
(4R,5S)-4-Formyl-5-isopropyl-2-phenyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester

Guidance literature:: Multi-step reaction with 6 steps

1: K₂[OsO₂(OH)4]; 1,4-bis(dihydroquininyl)anthraquinone / propan-1-ol; H₂O / 20 °C

2: Ti(OiPr)4 / 20 °C

3: H₂ / Pd/C / methanol

4: 85 percent / TsOH / 1,2-dimethoxy-ethane / 4 h

5: 85 percent / LHMDS / tetrahydrofuran / -78 °C

6: dicyclohexylcarbodiimide; DMSO; CF₃COOH / pyridine

With titanium(IV) isopropylate; 1,4-bis(dihydroquinidinyl)anthraquinone; K2; hydrogen; toluene-4-sulfonic acid; dimethyl sulfoxide; dicyclohexyl-carbodiimide; trifluoroacetic acid; lithium hexamethyldisilazane; palladium on activated charcoal; In tetrahydrofuran; pyridine; methanol; propan-1-ol; 1,2-dimethoxyethane; water; 1: Addition / 2: Esterification / 3: Hydrogenolysis / 4: Cyclization / 5: Condensation / 6: Oxidation;
DOI:10.1002/(SICI)1521-3773(19990419)38:8<1093::AID-ANIE1093>3.0.CO;2-U