本文描述了双环[1.1.0]丁烷(BCB)与咪唑烷/六氢嘧啶的B(C 6 F 5 ) 3催化的缩甲醛( n +3)( n =5和6)环加成。该反应为合成具有挑战性的中等桥环库(2,5-二氮杂双环[5.1.1]壬烷和2,6-二氮杂双环[6.1.1]癸烷)提供了一种模块化、原子经济且高效的策略,反应速度适中。达到优异的产量。该反应还具有操作简单、反应条件温和、底物范围广泛等特点。放大实验和产品的各种合成转化进一步凸显了合成实用性。
Pyrazolidines. I. 1,2-Diarylpyrazolidines<sup>1</sup>
作者:RALPH DANIELS、BRUCE D. MARTIN
DOI:10.1021/jo01048a044
日期:1962.1
Catalyst-Free Synthesis of Aryl Diamines via a Three-Step Reaction Process
作者:Safak Bulut、Wendy L. Queen
DOI:10.1021/acs.joc.8b00151
日期:2018.4.6
of a series of symmetrical and/or unsymmetrical aryl diamines in notably high yields (82–98%) and purity and with a variety of different substituents. The methodology is shown successful for the preparation of aryl diamines having para- and/or meta-substituted carboxyl, nitro, bromo, methoxy, or methyl groups. This green synthetic pathway, which is catalyst free, requires only three steps, and proceeds
B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-Catalyzed Formal (<i>n</i> + 3) (<i>n</i> = 5 and 6) Cycloaddition of Bicyclo[1.1.0]butanes to Medium Bicyclo[<i>n</i>.1.1]alkanes
Herein, a B(C6F5)3-catalyzed formal (n + 3) (n = 5 and 6) cycloaddition of bicyclo[1.1.0]butanes (BCBs) with imidazolidines/hexahydropyrimidines is described. The reaction provides a modular, atom-economical, and efficient strategy to two libraries of synthetically challenging medium-bridged rings, 2,5-diazabicyclo[5.1.1]nonanes and 2,6-diazabicyclo[6.1.1]decanes, in moderate to excellent yields. This
本文描述了双环[1.1.0]丁烷(BCB)与咪唑烷/六氢嘧啶的B(C 6 F 5 ) 3催化的缩甲醛( n +3)( n =5和6)环加成。该反应为合成具有挑战性的中等桥环库(2,5-二氮杂双环[5.1.1]壬烷和2,6-二氮杂双环[6.1.1]癸烷)提供了一种模块化、原子经济且高效的策略,反应速度适中。达到优异的产量。该反应还具有操作简单、反应条件温和、底物范围广泛等特点。放大实验和产品的各种合成转化进一步凸显了合成实用性。