Tetrahedron Letters

Palladium-catalyzed cross-coupling of cyclopropylmethyl N-tosylhydrazones with aromatic bromides: an easy access to multisubstituted 1, 3-butadienes

Q Yang, H Chai, T Liu, Z Yu

文献索引：Yang, Qin; Chai, Huining; Liu, Tingting; Yu, Zhengkun Tetrahedron Letters, 2013 , vol. 54, # 48 p. 6485 - 6489

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被引用次数: 5

摘要

Abstract Direct synthesis of 1, 1-disubstitued 1, 3-butadienes has been efficiently realized from the cross-coupling of cyclopropylmethyl N-tosylhydrazones with aromatic bromides by means of PdCl 2 (MeCN) 2 as catalyst. 1, 1, 4-Trisubstitued 1, 3-butadiene derivatives were obtained in up to 70% yields through a one-pot procedure catalyzed by Pd (OAc) 2 in the presence of excessive amount of aromatic bromides. The present methodology provides ...