A Willgerodt–Kindler Type Selenation of Dihalomethane Derivatives, Chloroform, and Sodium Trichloroacetate by Treating with a Base, Elemental Selenium, and an Amine
selenoamides (2) from nitriles, metallic selenium, carbonmonoxide, water, and amines have been developed on the basis of an amino-group-exchange reaction of in situ formed N-unsubstituted selenoamides (1) with primary or secondary amines. The reactions consist of two processes, i.e., the formation of selenoamides 1 by the reaction of nitriles and H2Se formed from selenium, carbonmonoxide and water, and the subsequent
Convenient Syntheses of N,N-Dialkylselenoamides and N,N,N′,N′-Tetraalkylselenoureas by Treating Terminal<i>gem</i>-Dihaloalkanes, Chloroform, or Sodium Trichloroacetate with a Base, Elemental Selenium, and Amines
Treatment of terminal gem-dihaloalkanes, chloroform, or sodium trichloroacetate with elemental selenium in the presence of NaH and an excess amount of primary or secondary amines gave selenoamides and selenoureas in modest yields.
A New Synthetic Method for<i>N</i>-Mono- and<i>N,N</i>-Disubstituted Selenoamides
作者:Ming-De Ruan、Pong-Fei Zhang、Yong Tao、Wei-Qiang Fan
DOI:10.1080/00397919608004577
日期:1996.7
N-Mono and N,N-disubstituted selenoamides are synthesized in a one-pot procedure from nitriles, selenium metal and NaBH4 followed by the amine group exchange of the intermediate primary selenoamide with an amine.