methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

Base Information

Chemical Name:methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate
CAS No.:956031-02-0
Molecular Formula:C₃₂H₂₈O₉
Molecular Weight:556.569
Hs Code.:

Synonyms:methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

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Chemical Property of methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

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Technology Process of methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

There total 4 articles about methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-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: 59.0%

: 956031-01-9
2'-bromo-5',6'-dimethoxy-3'-methoxycarbonylphenyl 2-bromo-3,5-dibenzyloxy-4-methoxybenzoate

: 956031-02-0
methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

Guidance literature:: With copper; In N,N-dimethyl-formamide; at 110 - 180 ℃; for 19h;
DOI:10.1016/j.tet.2007.07.103

Reference yield:

: 956030-94-7
2-bromo-3,5-dibenzyloxy-4-methoxybenzoic acid

: 956031-02-0
methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

Guidance literature:: Multi-step reaction with 2 steps

1: 78 percent / 1,3-dicyclohexylcarbodiimide; 4-(dimethylamino)pyridine / tetrahydrofuran / 12 h / 20 °C

2: 59 percent / copper / dimethylformamide / 19 h / 110 - 180 °C

With dmap; copper; dicyclohexyl-carbodiimide; In tetrahydrofuran; N,N-dimethyl-formamide;
DOI:10.1016/j.tet.2007.07.103

Reference yield:

: 100-44-7
benzyl chloride

: 956031-02-0
methyl 8,10-dibenzyloxy-3,4,9-trimethoxy-6-oxo-6H-dibenzo[b,d]pyran-1-carboxylate

Guidance literature:: Multi-step reaction with 3 steps

1.1: 1,3-dibromo-5,5-dimethylhydantoin / CHCl₃ / 4 h / 20 °C

1.2: K₂CO₃ / dimethylformamide / 55 - 60 °C

1.3: 81 percent / LiOH / H₂O; methanol / 8 h / 20 °C

2.1: 78 percent / 1,3-dicyclohexylcarbodiimide; 4-(dimethylamino)pyridine / tetrahydrofuran / 12 h / 20 °C

3.1: 59 percent / copper / dimethylformamide / 19 h / 110 - 180 °C

With dmap; 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; copper; dicyclohexyl-carbodiimide; In tetrahydrofuran; chloroform; N,N-dimethyl-formamide;
DOI:10.1016/j.tet.2007.07.103