作者:Meng-Yang Chang、Chieh-Kai Chan、Shin-Ying Lin、Ru-Ting Hsu
DOI:10.1016/j.tet.2012.10.017
日期:2012.12
reaction of aldehydes 3a–e with nitroalkanes and NH4OAc at reflux, reduction of the resulting nitroalkenes 4a–h with LAH at rt followed by protection with K2CO3 and PhSO2Cl at rt, one-pot oxidative cleavage annulation of olefins 5a–h with the one-pot combination of OsO4/NaIO4 at reflux, and hydrogenation of the corresponding enamines 6a–f. Aldehydes 3a–e was prepared from 2a and 2b in moderate yield of
描述了从2a和2b开始以适度的总收率合成四氢-3-苯并ze庚因1a – f的合成路线。简便的方法是在回流下通过醛3a - e与硝基烷和NH 4 OAc的亨利反应,在室温下用LAH还原所得的硝基烯烃4a - h,然后在室温下用K 2 CO 3和PhSO 2 Cl进行保护,OsO 4 / NaIO 4一锅法结合进行烯烃5a – h的双锅氧化裂解环化反应在回流下,氢化相应的烯胺6a - f。由2a和2b制得的醛3a - e以适度的三步法制备。