SUBSTITUTED SPIROCYCLIC-PYRROLOQUINAZOLINONES AND SPIROCYCLIC-PIPERIDINOQUINAZOLINONES
摘要:
Disclosed herein are substituted spirocyclic-pyrroloquinazolinones and spirocyclic-piperidinoquinazolinones of formula (I), methods for their preparation, and uses thereof.
Hydrogen Atom Transfer‐Mediated Cyclisations of Nitriles
作者:Oliver J. Turner、John A. Murphy、David J. Hirst、Eric P. A. Talbot
DOI:10.1002/chem.201805236
日期:2018.12.12
Hydrogenatomtransfer‐mediated intramolecular C−C coupling reactions between alkenes and nitriles, using PhSiH3 and catalytic Fe(acac)3, are described. This introduces a new strategic bond disconnection for ring‐closing reactions, forming ketones via imine intermediates. Of note is the scope of the reaction, including formation of sterically hindered ketones, spirocycles and fused cyclic systems.
alkene-trifluoromethylation-triggered nitrile insertion/remotefunctionalizationrelay process has been achieved, in which “interrupted” remote 1,n-difunctionalizations of alkenes with nitrile insertion can deliver iminyl radical intermediates instead of C-based radicals, followed by subsequent 1,n-HAT to furnish corresponding remotefunctionalization. This relay protocol enables a straightforward approach to
已经实现了铜催化的烯烃-三氟甲基化触发的腈插入/远程功能化中继过程,其中“中断”的远程 1, n -具有腈插入的烯烃的双官能化可以提供亚氨基自由基中间体而不是 C 基自由基,然后是随后的 1, n -HAT 提供相应的远程功能化。该中继协议能够以一种简单的方法来简化结构多样的三氟甲基化氮杂环的组装。
Hydrogen Atom Transfer‐Mediated Domino Cyclisation Reaction to Access (Spiro)Quinazolinones
作者:Oliver J. Turner、David J. Hirst、John A. Murphy
DOI:10.1002/chem.201905712
日期:2020.3.9
A radical domino cyclisation reaction of N-cyanamide alkenes, mediated by hydrogen atom transfer (HAT) has been developed. This method, using PhSiH3 and catalytic Fe(acac)3 , allows for the synthesis of challenging (spiro)quinazolinone scaffolds from simple, tractable (hetero)aryl carboxylic acid and cyanamide building blocks.
Electrochemical Trifluoromethylation/Bicyclization of <i>N</i>-Cyanamide Alkenes: Synthesis of Bicyclic Amidine Derivatives
作者:Zhi-Hua Yan、Yan Yan、Zhong-Lin Wei、Wei-Wei Liao
DOI:10.1021/acs.joc.3c02777
日期:2024.2.16
available starting materials furnished nonaromatic fused azaheterobicyclic compounds in a highly efficient and sustainable manner. The broad substrate scope, facile scalability, and sustainability enabled this electrochemical process to be an appealing complement for trifluoromethylated cyclic amidines.
报道了带有两个电子差异的烯烃部分的N-氰酰胺烯烃的阳极氧化三氟甲基化级联,其中各种N-不饱和酰基氰酰胺烯烃和CF 3 SO 2 Na作为容易获得的起始材料,以高效且可靠的方式提供非芳香族稠合氮杂双环化合物。可持续的方式。广泛的底物范围、易于扩展和可持续性使该电化学过程成为三氟甲基化环脒的有吸引力的补充。
Goessnitzer, Edith; Malli, Roland; Schuster, Silvia, Archiv der Pharmazie, 2002, vol. 335, # 11-12, p. 535 - 546
作者:Goessnitzer, Edith、Malli, Roland、Schuster, Silvia、Favre, Bertrand、Ryder, Neil S.