Synthesis 2013; 45(3): 347-354
DOI: 10.1055/s-0032-1316833
paper
© Georg Thieme Verlag Stuttgart · New York

Synthesis, Characterization, and Reactivity of N-Acyl Chloroformamidines: Useful Building Blocks for the Construction of N-Acyl-Substituted 1,1-Diaminoethylenes, Amidines, Ureas, and Thioureas

Yang Wang
a   Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, P. R. of China
,
Yue Chi
a   Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, P. R. of China
,
Fei Zhao
a   Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, P. R. of China
,
Wen-Xiong Zhang*
a   Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, P. R. of China
b   State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. of China   Fax: +86(10)62751708   eMail: wx_zhang@pku.edu.cn
,
Zhenfeng Xi
a   Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, P. R. of China
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Publikationsverlauf

Received: 23. Oktober 2012

Accepted after revision: 03. Dezember 2012

Publikationsdatum:
12. Dezember 2012 (online)


Abstract

The systematic synthesis of a series of N-acyl chloroform­amidines is achieved by reaction of carbodiimides with acid chlorides; the structure of an N-acyl chloroformamidine was confirmed by X-ray diffraction. The reactivity of N-acyl chloroformamidines towards diethyl malonate, phenylethynyllithium, pentane-2,4-dione, methyl acetoacetate, water, 1,3-dimethylurea, 1,3-dimethylthiourea, and sodium hydrosulfide, resulted in unique protocols for the synthesis of N-acyl-substituted 1,1-diaminoethylenes, amidines, ureas, and thioureas, respectively. These results show that N-acyl chloroformamidines have a good ability to accept nucleophilic attack for the construction of useful N-containing compounds.

Supporting Information