Ruthenium–alkylidene catalysed cross-metathesis of fatty acid derivatives with acrylonitrile and methyl acrylate: a key step toward long-chain bifunctional and amino acid compounds
作者:X. Miao、R. Malacea、C. Fischmeister、C. Bruneau、P. H. Dixneuf
DOI:10.1039/c1gc15569e
日期:——
The ruthenium catalysed cross-metathesis of fatty-esters arising from plant oils with acrylonitrile is presented. The resulting linear nitrile ester products have potential as new intermediates for polyamides synthesis. A series of commercially available catalysts are able to promote the transformation of methyl 10-undecenoate 1, dimethyl octadec-9-en-1,18-dioate 5 and methyl ricinoleate 9 with acrylonitrile
The Vinylogous Aldol Reaction of Unsaturated Esters and Enolizable Aldehydes Using the Novel Lewis Acid Aluminum Tris(2,6-di-2-naphthylphenoxide)
作者:Jeffrey A. Gazaille、Tarek Sammakia
DOI:10.1021/ol300738f
日期:2012.6.1
(ATNP), and its use in the vinylogous aldol reaction between methyl crotonate and enolizable aldehydes are described. ATNP is related to Yamamoto’s Lewis acid, aluminum tris(2,6-diphenylphenoxide) (ATPH), but the 2-naphthyl groups more effectively block the α-position of aldehydes, enabling the selective enolization of crotonateesters in the presence of enolizable aldehydes. Vinylogous aldol reactions
Condensation of crotonic and tiglic acid dianions with aldehydes and ketones
作者:Paul R. Johnson、James D. White
DOI:10.1021/jo00197a019
日期:1984.11
Fujita,T. et al., Israel Journal of Chemistry, 1974, vol. 12, # 5, p. 971 - 976
作者:Fujita,T. et al.
DOI:——
日期:——
1-methylcyclopropyl (MCP) ethers as protecting groups
作者:Scott D. Rychnovsky、Jinsoo Kim
DOI:10.1016/0040-4039(91)80480-t
日期:1991.12
Terminal 1,2- or 1,3-diol acetonides can be converted regioselectively into secondary 1-methylcyclopropyl (MCP) ethers or primary triethylsilyl ethers under mild conditions. MCP ethers are stable to a variety of conditions and can be removed by treatment with NBS or DDQ.