Synthesis of new 5-nitrotetrahydro-1,3-oxazine derivatives via electron-transfer reactions
作者:Michel P. Crozeta、Patrice Vanelle
DOI:10.1016/s0040-4020(01)89494-1
日期:1989.1
nucleophiles for SRN1 reactions with p-nitrobenzyl chloride, 2,2-dinitropropane and 1-methyl-2-chloromethyl-5-nitroimidazole. From C-alkylation products, base-promoted nitrous acid elimination and electron-transfer elimination of the two nitro groups afford new tetrahydro-1,3-oxazines with respectively a tri- and tetrasubstituted double bond at the 5 position. These new tetrahydro-1,3-oxazines can be hydrolysed
发现5-硝基四氢-1,3-恶嗪盐是与对硝基苄基氯,2,2-二硝基丙烷和1-甲基-2-氯甲基-5-硝基咪唑的S RN 1反应有用的亲核试剂。从C-烷基化产物中,两个硝基的碱促进的亚硝酸消除和电子转移消除提供了新的四氢-1,3-恶嗪,它们在5位分别具有一个三和四取代的双键。这些新的四氢-1,3-恶嗪可通过与盐酸加热而水解为相应的烯属氨基醇。