OKUMOTO, HIROSHI;TSUJI, JIRO, SYNTH. COMMUN., 1982, 12, N 13, 1015-1020
作者:OKUMOTO, HIROSHI、TSUJI, JIRO
DOI:——
日期:——
BARBOT, F.;MIGINIAC, P., BULL. SOC. CHIM. FRANCE, 1983, N 1-2, 41-45
作者:BARBOT, F.、MIGINIAC, P.
DOI:——
日期:——
1-Bromo-2-ethoxycyclopropyllithium: A Synthetic Equivalent of 2-Lithio-or 3-Lithiopropenal. Application to the Synthesis of Juvenile Hormone (JH-II), β-Sinensal, and Jasmonoids
resulting lithium carbenoid 3 was allowed to react with various electrophiles to give 1-substituted trans-1-bromo-2-ethoxycyclopropanes (1) in good yields. The trans relationship of Br and OEt groups was found particularly pertinent to the ethanolysis of 1 producing 2-substituted propenal diethyl acetal derivatives. The reaction has been applied to 1-methoxycyclohexene–dibromocarbene adducts, giving