Synthesis of Propargylamines by Cross-Dehydrogenative Coupling

Abstract

Propargylamines are versatile compounds for heterocyclic synthesis, some of which are current drugs prescribed to treat patients with Parkinson’s disease. There are different methods to synthesize propargylamines, however, modern chemistry has moved progressively to rely on new strategies that meet the principles of Green Chemistry. In this context, propargylamines are readily accessible by the cross-dehydrogenative coupling (CDC) of two C-H bonds (i.e., NCsp3-H and Csp-H bonds); surely, CDC can be considered the most atom-economic and efficient manner to form C-C bonds. The aim of this review is to provide a comprehensive survey on the synthesis of propargylamines by the CDC of amines and terminal alkynes from three fronts: (a) transition-metal homogeneous catalysis, (b) transition-metal heterogeneous catalysis and (c) photoredox catalysis. A section dealing with the asymmetric synthesis of chiral propargylamines is also included. Special attention is also devoted to the proposed reaction mechanisms.

Cu(II)‐Amino Acid Ionic Liquid Surfactants: Metallovesicles as Nano‐Catalytic Reactors for Cross Dehydrogenative Coupling Reaction in Water

“…Cross‐dehydrogenative coupling (CDC) has been an excellent strategy for forming the C−C bonds between amines and terminal acetylene (propargyl amines) under the oxidative condition [17] . The C−C bond formation via C−H activation pathway is demanding in the organic reactions due to its various protocols.…”

“…[16] Cross-dehydrogenative coupling (CDC) has been an excellent strategy for forming the CÀ C bonds between amines and terminal acetylene (propargyl amines) under the oxidative condition. [17] The CÀ C bond formation via CÀ H activation pathway is demanding in the organic reactions due to its various protocols. N-aryl tetrahydroisoquinolenes are widely used in industries and research fields due to their biological and pharmacological importance.…”