作者:Tomoko Kitano、Naohiro Shirai、Yoshiro Sato
DOI:10.1055/s-1991-26627
日期:——
Fluoride-ion induced desilylation reaction of 3-Aryl-4-methyl-4-[(trimethylsilyl)methyl]morpholinium iodides 5a,b gave 4-methyl-6-phenyl-1,4-oxazepane (9a, Stevens rearrangement product) from 5a, and 10-methoxy-2-methyl-1,2,3,4,6, 11a-hexahydro-5,2-benzoxazonine (7b) from 5b. In the presence of 1, 8-diazabicyclo[5.4.0]undec-7-ene, however, both reactions afforded 10-substituted 2-methyl-1,2,3, 4,6,7-hexahydro-5,2-benzoxazonines 8a,b (Sommelet-Hauser rearrangement products).
氟离子诱导的 3-芳基-4-甲基-4-[(三甲基甲硅烷基)甲基]吗啉鎓碘化物 5a,b 的脱甲硅烷基化反应得到 4-甲基-6-苯基-1,4-氧氮杂环庚烷(9a,史蒂文斯重排产物) 5a,和来自5b的10-甲氧基-2-甲基-1,2,3,4,6,11a-六氢-5,2-苯并恶嗪(7b)。然而,在 1, 8-二氮杂双环[5.4.0]十一碳-7-烯存在下,两个反应均得到 10-取代的 2-甲基-1,2,3, 4,6,7-六氢-5,2-苯并恶唑啉 8a,b(Sommelet-Hauser 重排产物)。