2H-1-Benzopyran-4-acetic acid, 2-[3,4-bis(phenylmethoxy)phenyl]-3,4-dihydro-3,5,7-tris(phenylmethoxy)- , phenylmethyl ester, (2R,3R,4S)-

Base Information

Chemical Name:2H-1-Benzopyran-4-acetic acid, 2-[3,4-bis(phenylmethoxy)phenyl]-3,4-dihydro-3,5,7-tris(phenylmethoxy)- , phenylmethyl ester, (2R,3R,4S)-
CAS No.:478241-22-4
Molecular Formula:C59H52O8
Molecular Weight:889.057
Hs Code.:
Mol file:478241-22-4.mol

Synonyms:

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Chemical Property of 2H-1-Benzopyran-4-acetic acid, 2-[3,4-bis(phenylmethoxy)phenyl]-3,4-dihydro-3,5,7-tris(phenylmethoxy)- , phenylmethyl ester, (2R,3R,4S)-

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Technology Process of 2H-1-Benzopyran-4-acetic acid, 2-[3,4-bis(phenylmethoxy)phenyl]-3,4-dihydro-3,5,7-tris(phenylmethoxy)- , phenylmethyl ester, (2R,3R,4S)-

There total 4 articles about 2H-1-Benzopyran-4-acetic acid, 2-[3,4-bis(phenylmethoxy)phenyl]-3,4-dihydro-3,5,7-tris(phenylmethoxy)- , phenylmethyl ester, (2R,3R,4S)- 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: 95.0%

: 92144-04-2
1-<(tert-butyldimethylsilyl)oxy>-1-(benzyloxy)ethylene

: 478241-15-5
Acetic acid (2R,3S,4S)-3,5,7-tris-benzyloxy-2-(3,4-bis-benzyloxy-phenyl)-chroman-4-yl ester

: 478241-22-4
[(2R,3R,4S)-3,5,7-Tris-benzyloxy-2-(3,4-bis-benzyloxy-phenyl)-chroman-4-yl]-acetic acid benzyl ester

Guidance literature:: With boron trifluoride diethyl etherate; In dichloromethane; at -78 ℃; for 1h;
DOI:10.1016/S0040-4039(02)01826-9

Reference yield:

: 100-39-0
benzyl bromide

: 478241-22-4
[(2R,3R,4S)-3,5,7-Tris-benzyloxy-2-(3,4-bis-benzyloxy-phenyl)-chroman-4-yl]-acetic acid benzyl ester

Guidance literature:: Multi-step reaction with 3 steps

1: 91 percent / NaH / dimethylformamide / 4 h / 25 °C

2: 51 percent / DDQ / CH₂Cl₂

3: 95 percent / BF₃*OEt₂ / CH₂Cl₂ / 1 h / -78 °C

With boron trifluoride diethyl etherate; sodium hydride; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In dichloromethane; N,N-dimethyl-formamide;
DOI:10.1016/S0040-4039(02)01826-9

Reference yield:

: 87292-49-7
5,7,3',4'-tetra-O-benzylepicatechin

: 478241-22-4
[(2R,3R,4S)-3,5,7-Tris-benzyloxy-2-(3,4-bis-benzyloxy-phenyl)-chroman-4-yl]-acetic acid benzyl ester

Guidance literature:: Multi-step reaction with 3 steps

1: 91 percent / NaH / dimethylformamide / 4 h / 25 °C

2: 51 percent / DDQ / CH₂Cl₂

3: 95 percent / BF₃*OEt₂ / CH₂Cl₂ / 1 h / -78 °C

With boron trifluoride diethyl etherate; sodium hydride; 2,3-dicyano-5,6-dichloro-p-benzoquinone; In dichloromethane; N,N-dimethyl-formamide;
DOI:10.1016/S0040-4039(02)01826-9