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ChemicalBook CAS DataBase List PROCYANIDIN B2
29106-49-8

PROCYANIDIN B2 synthesis

5synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 5 steps
1.1: 82 percent / K2CO3 / dimethylformamide / 0 - 20 °C
2.1: DDQ / CH2Cl2 / 3 h / 20 °C
2.2: 63 percent / DMAP / CH2Cl2 / 0.33 h
3.1: 99 percent / N-bromosuccinimide / CH2Cl2 / -78 - 20 °C
4.1: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
5.1: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C

References:

Tarascou, Isabelle;Barathieu, Karine;Andre, Yann;Pianet, Isabelle;Dufourc, Erick J.;Fouquet, Eric [European Journal of Organic Chemistry,2006,# 23,p. 5367 - 5377]

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