Tanasescu; Nanu, Chemische Berichte, 1939, vol. 72, p. 1083,1089, 1090
作者:Tanasescu、Nanu
DOI:——
日期:——
Acyl and Decarbonylative Suzuki Coupling of <i>N</i>-Acetyl Amides: Electronic Tuning of Twisted, Acyclic Amides in Catalytic Carbon–Nitrogen Bond Cleavage
We report the Pd-catalyzed acyl and the Ni-catalyzed biaryl Suzuki–Miyauracross-coupling of N-acetyl-amides with arylboronicacids by selective N–C(O) cleavage. Activation of the amide bond by N-acylation provides electronically destabilized, acyclic, nonplanar amide, which readily undergoes cross-coupling with a wide range of boronic acids to produce biaryl ketones or biaryls in a highly efficient
Reaction of Electron-Deficient NN, NO Double Bonds, Singlet Oxygen, and CC Triple Bonds with Acyloxyketenes or Mesoionic 1,3-Dioxolium-4-olates: Generation of Unstable Mesoionic 1,3-Dioxolium-4-olates from Acyloxyketenes
作者:Masashi Hamaguchi、Naoki Tomida、Yuji Iyama
DOI:10.1021/jo0621975
日期:2007.2.1
Formation of the same compounds from the different starting materials indicates that their reactions involve the same intermediates. The formation of triacylbenzamidine and N-arylimide derivatives is explained by 1,3-dipolarcycloaddition between electron-deficient NN or NO bonds and mesoionic 1,3-dioxolium-4-olates following by decarboxylation, ring opening of the resultant carbonyl ylides, and subsequent