Tetrahedron Letters

Heterogeneous bimetallic Pt–Sn/γ-Al 2 O 3 catalyzed direct synthesis of diamines from N-alkylation of amines with diols through a borrowing hydrogen strategy

L Wang, W He, K Wu, S He, C Sun, Z Yu

Index: Wang, Liandi; He, Wei; Wu, Kaikai; He, Songbo; Sun, Chenglin; Yu, Zhengkun Tetrahedron Letters, 2011 , vol. 52, # 52 p. 7103 - 7107

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Citation Number: 19

Abstract

Direct synthesis of diamines has been efficiently realized from the N-alkylation of amines with diols by means of heterogeneous bimetallic Pt–Sn/γ-Al2O3 catalyst (0.5 wt% Pt, molar ratio Pt: Sn= 1: 3) through a 'Borrowing Hydrogen'strategy under ligand-free conditions. The present methodology provides an environmentally benign route to diamines.