2,6-Diazaspiro[3.3]heptanes: Synthesis and Application in Pd-Catalyzed Aryl Amination Reactions
摘要:
A concise and scalable synthesis of a 2,6-diazaspiro[3.3]heptane building block is reported. The usefulness of this structural surrogate of piperazine is shown in arene amination reactions yielding a variety of N-Boc-N'-aryl-2,6-diazaspiro[3.3]heptanes.
Pd-catalyzed arylation of linear and angular spirodiamine salts under aerobic conditions
作者:Sean W. Reilly、Nikaela W. Bryan、Robert H. Mach
DOI:10.1016/j.tetlet.2016.12.063
日期:2017.2
Application of Buchwald-Hartwig catalysis for development of biologically relevant arylspirodiamine compounds is reported. This synthetic methodology requires no inert atmosphere and affords yields up to 93% in just 20 min. Linear and sterically hindered angular spirodiamines in salt and free-base form are coupled with electron-rich and-withdrawing aryl chlorides, demonstrating a broad scope and applicability of this protocol. (C) 2016 Elsevier Ltd. All rights reserved.