Efficient Synthesis of 2-Vinyl-. GAMMA.-butyrolactones and 2-Vinyl-. GAMMA.-butyrolactams by Palladium-Catalyzed decarboxylative Carbonylation.
…, S Tanaka, K Fugami, Z Yoshida, Y Tamaru
文献索引：Bando, Takashi; Tanaka, Shuji; Fugami, Keigo; Yoshida, Zen-ichi; Tamaru, Yoshinao Bulletin of the Chemical Society of Japan, 1992 , vol. 65, # 1 p. 97 - 110
4-Vinyl-1, 3-dioxan-2-ones (cyclic carbonates) undergo decarboxylation-carbonylation by the catalysis of Pd (0) species under CO (in most cases, 1 atm) to provide 2-vinyl-γ- butyrolactones in good yields. The course of the reaction of 6-vinyltetrahydro-2H-1, 3-oxazin- 2-ones (cyclic carbamates) depends on the substituent on the nitrogen atom. When it is H or Ts (and COPh), 2-vinyl-γ-butyrolactams or 6-amino-3-hexenoic acid esters are obtained. ...
