(4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

Base Information

Chemical Name:(4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate
CAS No.:1228363-12-9
Molecular Formula:C₂₂H₂₀O₇
Molecular Weight:396.397
Hs Code.:

Synonyms:(4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

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Chemical Property of (4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

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Technology Process of (4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

There total 2 articles about (4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate 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%

: 1076-38-6,92395-12-5
4-hydroxy[1]benzopyran-2-one

: 98184-92-0,69662-19-7
ethyl 2-oxo-4-(p-methoxyphenyl)but-3-enoate

: 1228363-12-9
(4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

Guidance literature:: With (S)-1-(3,5-bis(trifluoromethyl)phenyl)-3-(3,3-dimethyl-1-(piperidin-1-yl)butan-2-yl)thiourea; In α,α,α-trifluorotoluene; at -25 ℃; for 48h; optical yield given as %ee; enantioselective reaction;
DOI:10.1002/chem.201002202

Reference yield:

: 1076-38-6,92395-12-5
4-hydroxy[1]benzopyran-2-one

: 98184-92-0
(E)?ethyl 4?(4?methoxyphenyl)?2?oxobut?3?enoate

: 1228363-12-9
(4R)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

: (4S)-ethyl 2-hydroxy-4-(4-methoxyphenyl)-5-oxo-2,3,4,5-tetrahydropyrano[3,2-c]chromene-2-carboxylate

Guidance literature:: With C₃₄H₃₇F₃N₆O₄; In dichloromethane; at 20 ℃; for 1.5h; Overall yield = 97 %; Overall yield = 77 mg; enantioselective reaction;
DOI:10.1021/acs.joc.8b01847