Palladium‐Catalyzed Coupling of Propargylic Carbonates with  N ‐Tosylhydrazones: Highly Selective Synthesis of Substituted Propargylic  N ‐Sulfonylhydrazones and Vinylallenes | Zendy

Chen ZiSheng | Zendy; Duan XinHua | Zendy; Wu LuYong | Zendy; Ali Shaukat | Zendy; Ji KeGong | Zendy; Zhou PingXin | Zendy; Liu XueYuan | Zendy; Liang YongMin | Zendy

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Palladium‐Catalyzed Coupling of Propargylic Carbonates with N ‐Tosylhydrazones: Highly Selective Synthesis of Substituted Propargylic N ‐Sulfonylhydrazones and Vinylallenes

Author(s) -

Chen ZiSheng,

Duan XinHua,

Wu LuYong,

Ali Shaukat,

Ji KeGong,

Zhou PingXin,

Liu XueYuan,

Liang YongMin

Publication year - 2011

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201100248

Subject(s) - palladium , catalysis , propane , chemistry , coupling (piping) , medicinal chemistry , organic chemistry , materials science , metallurgy

An efficient palladium‐catalyzed coupling of propargylic carbonates ( 1 ) with N ‐tosylhydrazones ( 2, 2′ ) has been carried out. A wide range of propargylic N ‐sulfonylhydrazones ( 3 ) and multisubstituted vinylallenes ( 4 ) can be obtained selectively by using either [PdCl 2 (CH 3 CN) 2 ] or [Pd 2 (dba) 3 ] as catalysts. (dba= trans , trans ‐dibenzylideneacetone, dppp=propane‐l,3‐diylbis(diphenylphosphane), Ts=4‐toluenesulfonyl.)

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