作者:Alan R. Katritzky、Kazuyuki Suzuki、Hai-Ying He
DOI:10.1021/jo010868n
日期:2002.5.1
Unsymmetrical imidazolidines 10-14, optically active imidazolidines 20-22, and 2,3-dihydro-1H-benzimidazoles 28 and 29 were synthesized in good to excellent yields by Mannich reactions of 1,2-ethanediamines 8a-c, 18a-c, or N-methyl-1,2-benzenediamine (26a) with benzotriazole and formaldehyde, followed by the nucleophilic substitution of the benzotriazolyl group with C-nucleophiles (Grignard reagents
通过1,2-乙二胺8a-c,18a-c,1,2-乙二胺的曼尼希反应以良好至极好的收率合成不对称咪唑烷10-14,光学活性咪唑烷20-22以及2,3-二氢-1H-苯并咪唑28和29。或N-甲基-1,2-苯二胺(26a)与苯并三唑和甲醛,然后用C-亲核试剂(格氏试剂,氰化钠),S-亲核试剂(苯硫醇)和P亲核取代苯并三唑基-亲核试剂(亚磷酸三乙酯)。