作者:KOICHI HIRAI、HIDEBUMI MATSUDA、YUKICHI KISHIDA
DOI:10.1248/cpb.21.1090
日期:——
Attempts were made to prepare sulfur substituted 2-azetidinones by the reaction of vinylsulfide with chlorosulfonyl isocyanate (CSI). The main product of the reaction of β-methylthiostyrene (I) with CSI was pyridone derivative (II), but in the case of 1-phenylthio-1-propene (V) the main products were dihydrouracil derivatives (VI and VII) and acrylic acid derivatives (VIII and IX). Reaction of 1-p-chloro- or p-methylphenylthio-1-propene (Xa and b) with CSI in dry ether at -30°gave the desired 2-azetidinone (β-lactam) derivatives (XIa and b) in 63 and 66.4% isolated yield respectively.
尝试通过乙烯硫化物与氯磺酰异氰酸酯(CSI)反应制备硫代2-氮杂丁烷酮。β-甲硫基苯乙烯(I)与CSI反应的主要产物是吡啶酮衍生物(II),但在1-苯硫基-1-丙烯(V)的情况下,主要产物是二氢尿嘧啶衍生物(VI 和 VII)以及丙烯酸衍生物(VIII 和 IX)。1-p-氯或p-甲苯硫基-1-丙烯(Xa 和 b)与CSI在干燥的乙醚中于-30°C反应,得到所需的2-氮杂丁烷酮(β-内酰胺)衍生物(XIa 和 b),其分离收率分别为63% 和 66.4%。