A process for preparing a N-alkylamine or N, N-dialkylamine, which comprises reacting a primary or secondary amine with a primary or secondary alcohol in the presence of a catalyst selected from iridium, rhodium, ruthenium, osmium, platinum, palladium and rhenium, present either as the metal or a salt or complex thereof. The catalyst is preferably a complex such as RhH(PPh3)4. The process can be used to cause cyclisation, including internal cyclisation so that, by way of example, N-methyl-pyrrolidine may be prepared from (1) pyrrolidine and methanol; (2) 1,4-butanediol and methylamine; and (3) 4-methylamino-1-butanol.
一种制备 N-烷基胺或 N,N-二烷基胺的工艺,包括在选自
铱、
铑、
钌、
锇、
铂、
钯和
铼的催化剂(以
金属或其盐或络合物形式存在)存在下,使
伯胺或仲胺与伯醇或仲醇反应。催化剂最好是络合物,如 RhH(PPh3)4。该工艺可用于环化,包括内部环化,例如,可从 (1)
吡咯烷和
甲醇;(2)
1,4-丁二醇和
甲胺;以及 (3) 4-甲基
氨基-
1-丁醇制备
N-甲基吡咯烷。