Isopropenyldihydrofuran derivatives. Preparation and reactions of some isopropenyldihydrofurandicarboxylates
作者:Seiji Yamaguchi、Yosbihiko Sugioka、Miwa Ishida、Hajime Yokoyama、Yoshiro Hirai
DOI:10.1002/jhet.5570340439
日期:1997.7
Diethyl 5-isopropenyl-4,5-dihydrofuran-2,3-dicarboxylate 1a and methyl 5-isopropenyl-3-methoxy-carbonyl-4,5-dihydrofuran-2-acetate 2a were prepared by cylization of diethyl 2-oxosuccinate or dimethyl 3-oxoglutarate with (E)-1,4-dibromo-2-methyl-2-butene. Their chemical properties were studied.
通过将2-氧代丁二酸二乙酯或二甲基二氯环化,制得5-异丙烯基-4,5-二氢呋喃-2,3-二羧酸二乙酯1a和5-异丙烯基-3-甲氧基-羰基-4,5-二氢呋喃-2-乙酸甲酯2a。具有(E)-1,4-二溴-2-甲基-2-丁烯的3-氧戊二酸酯。研究了它们的化学性质。