93138-89-7Relevant academic research and scientific papers
Synthesis of Hydrazines via Radical Generation and Addition of Azocarboxylic tert -Butyl Esters
Ru, Chen-Hao,Guo, Shi-Huan,Pan, Gao-Fei,Zhu, Xue-Qing,Gao, Ya-Ru,Wang, Yong-Qiang
supporting information, p. 1910 - 1913 (2018/04/16)
A new chemistry of azo compounds that is a radical generation and addition in situ of azocarboxylic tert-butyl esters to synthesize hydrazines has been described. The protocol provides a novel strategy for the synthesis of various hydrazines. The advantag
Aerobic Oxidation of Alkyl 2-Phenylhydrazinecarboxylates Catalyzed by CuCl and DMAP
Kim, Min Hye,Kim, Jinho
, p. 1673 - 1679 (2018/02/09)
Recently, various fruitful organic reactions such as a catalytic Mitsunobu reaction were reported by virtue of alkyl 2-phenylazocarboxylates, however, the synthesis of alkyl 2-phenylazocarboxylates largely depended on the stoichiometric use of toxic oxidants. In this manuscript, an environment-friendly aerobic oxidative transformation of alkyl 2-phenylhydrazinecarboxylates to alkyl 2-phenylazocarboxylates is disclosed. The use of CuCl and DMAP system efficiently catalyzed the aerobic oxidation of alkyl 2-phenylhydrazinecarboxylates under mild conditions. The reaction rate of the present Cu-catalysis was much faster than that of the previously reported Fe-catalysis, and a variety of azo products were synthesized within 3 h. The present protocol was effective on larger scale. It was observed that the produced azo compound could undergo various reactions without isolation through one-pot sequential protocols.
Diaza [1,4] Wittig-type rearrangement of N-allylic-N-Boc-hydrazines into γ-amino- N -Boc-enamines
Tayama, Eiji,Kobayashi, Yoshiaki,Toma, Yuka
supporting information, p. 10570 - 10573 (2016/09/02)
Diaza [1,4] Wittig-type rearrangement of N-allylic-N-Boc-hydrazines into γ-amino-N-Boc-enamines was demonstrated. The scope and limitation, experimental mechanistic studies, and a proposed reaction mechanism were also described.
Novel and versatile synthesis of disubstituted 1,2-dihydro-1,2,4-triazol-3- ones
Graham, Mark A.,Bethel, Paul A.,Burgess, Jonathan,Fairley, Gary,Glossop, Steve C.,Greenwood, Ryan D. R.,Jones, Clifford D.,Lovell, Scott,Swallow, Steve
supporting information, p. 6078 - 6081 (2014/01/06)
A novel method for the synthesis of a wide range of 1,5-disubstituted 1,2-dihydro-1,2,4-triazol-3-ones is described. The key step involves a reaction between a dilithiated BOC-hydrazine and a N-alkoxycarbonylcarboximidothioate. A broad range of aryl and a
An efficient Pd-catalyzed coupling of hydrazine derivatives with aryl halides
Ma, Fang-Fang,Peng, Zhi-Yong,Li, Wan-Fang,Xie, Xiao-Min,Zhang, Zhaoguo
body text, p. 2555 - 2558 (2011/12/04)
A convenient method for the intermolecular N-arylation of hydrazides with aryl halides in the presence of a palladium catalyst, a MOP-type ligand, and Cs2CO3 is reported. The reaction gives coupling products in good to excellent yiel
Arylation of diversely substituted hydrazines by tri- and pentavalent organobismuth reagents
T?ubrik, Olga,M?eorg, Uno,Sillard, Rannar,Ragnarsson, Ulf
, p. 8363 - 8373 (2007/10/03)
Various hydrazine derivatives were studied with respect to arylation by triarylbismuthane and triarylbismuth diacetate reagents with emphasis on scope and limitations. Among these reagents, a few contained bulky substituents in their aromatic rings. The a
