(3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

Base Information

Chemical Name:(3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester
CAS No.:116287-83-3
Molecular Formula:C₂₅H₂₄O₆
Molecular Weight:420.462
Hs Code.:

Synonyms:(3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

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Chemical Property of (3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

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Technology Process of (3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

There total 7 articles about (3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-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: 96.0%

: 116287-81-1,116287-84-4
(3aS,4S,7R,7aS)-3,3a-Bis-benzyloxy-7-hydroxy-6-methyl-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

: 116287-83-3
(3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

Guidance literature:: With dimethyl sulfoxide; trifluoroacetic anhydride; In dichloromethane; at -78 ℃;
DOI:10.1016/S0040-4039(00)96841-2

Reference yield:

: 116287-78-6
(1R,2S,6S,7S)-5,6-Bis-benzyloxy-10-hydroxymethyl-3,9-dioxa-tricyclo[5.2.2.0^2,6]undeca-4,10-dien-8-one

: 116287-83-3
(3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

Guidance literature:: Multi-step reaction with 4 steps

1: 98 percent / Ph₃P, / tetrahydrofuran; CCl₄

2: 84 percent / sodium(trimethoxy)borohydride / hexamethylphosphoric acid triamide / 3.5 h / 75 °C

3: 80 percent / aq. KOH / ethanol / 1 h / Heating

4: 96 percent / DMSO, TFAA / CH₂Cl₂ / -78 °C

With potassium hydroxide; sodium trimethoxyborohydride; dimethyl sulfoxide; triphenylphosphine; trifluoroacetic anhydride; In tetrahydrofuran; tetrachloromethane; N,N,N,N,N,N-hexamethylphosphoric triamide; ethanol; dichloromethane;
DOI:10.1016/S0040-4039(00)96841-2

Reference yield:

: 116287-80-0,116347-79-6
(2S,6S)-5,6-Bis-benzyloxy-10-methyl-3,9-dioxa-tricyclo[5.2.2.0^2,6]undeca-4,10-dien-8-one

: 116287-83-3
(3aS,4S,7aR)-3,3a-Bis-benzyloxy-6-methyl-7-oxo-3a,4,7,7a-tetrahydro-benzofuran-4-carboxylic acid methyl ester

Guidance literature:: Multi-step reaction with 2 steps

1: 80 percent / aq. KOH / ethanol / 1 h / Heating

2: 96 percent / DMSO, TFAA / CH₂Cl₂ / -78 °C

With potassium hydroxide; dimethyl sulfoxide; trifluoroacetic anhydride; In ethanol; dichloromethane;
DOI:10.1016/S0040-4039(00)96841-2