Wheeler; Nicolet; Johnson, American Chemical Journal, 1911, vol. 46, p. 472
作者:Wheeler、Nicolet、Johnson
DOI:——
日期:——
Degradative studies on peptides and proteins. Part I. A new method of stepwise degradation of peptides from the end bearing a free amino-group, employing N-acyldithiocarbamates
作者:D. T. Elmore、P. A. Toseland
DOI:10.1039/jr9540004533
日期:——
Versatile Novel Syntheses of Imidazoles
作者:Andreas Rolfs、Jürgen Liebscher
DOI:10.1021/jo970072h
日期:1997.5.1
A novel ring transformation/desulfurization of substituted 2-methyl-1,2,4-thiadiazolium salts 2 provides a versatile entry to imidazoles 3 with a variety of substituents. Simple one-pot procedures combine the preparation of starting 1,2,4-thiadiazolium salts 2 from N-(thiocarbonyl)-N'-methylamidines 1 or 1,2,4-dithiazolium triiodides 6 with the ring transformation/desulfurization to the imidazoles 3. Alternatively, N-(thiacarbonyl)-N'-methylamidines 1 can be transformed to imidazoles 3 or to 1-substituted imidazoles 5 via S-methylation and elimination of methylthiol. In the same manner, a new entry to 4H-imidazoles 8 could be developed.
Wheeler; Merriam, Journal of the American Chemical Society, 1901, vol. 23, p. 298
作者:Wheeler、Merriam
DOI:——
日期:——
RESEARCHES ON HYDANTOINS. XXVII. SYNTHESIS OF HYDANTOIN-4-CARBOXAMIDE.