作者:Igor Bytschkov、Sven Doye
DOI:10.1016/s0040-4039(02)00644-5
日期:2002.5
Cp2TiMe2 has been found to be a competent catalyst for the intramolecular hydroamination/cyclization of aminoalkynes. In the presence of 5.0 mol% Cp2TiMe2, the hydroamination reactions proceed smoothly at 100–110°C to give five- and six-membered cyclic imines within 4–6 h. After subsequent reduction performed with zinc-modified NaBH3CN at room temperature cyclic amines can be isolated in good yields
已经发现Cp 2 TiMe 2是氨基炔的分子内加氢胺化/环化的有效催化剂。在5.0 mol%Cp 2 TiMe 2的存在下,加氢胺化反应在100–110°C进行得很顺利,在4–6 h内可生成五元和六元环状亚胺。随后在室温下用锌改性的NaBH 3 CN还原后,可以良好的收率分离出环胺。