Harjit Singh, ; Kumar, Subodh (1987) Synthesis of heterocycles via enamines-XIII: steric control on the mode of reactions of β-isothiocyanatoketones with amino-acids Tetrahedron, 43 (9). pp. 2177-2180. ISSN 0040-4020
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00404...
Related URL: http://dx.doi.org/10.1016/S0040-4020(01)86799-5
Abstract
Glycine and anthranilic acid with 4-isothiocyanato-butan-2-one (1) gives 3-(3-oxobutyl)-4-oxoimidazolidine-2-thione (11) and 3-(3-oxobutyl)-2-thioxoquinazolin-4-one (15) whereas with 4-isothiocyanato-4-methylpentan-2-one (2), having a gem-dimethyl group at the carbon bearing isothiocyanate group, tetrahydro-7,7,8a-trimethyl-5-thioxo-6H-oxazolo[3,2-C?] pyrimidine-2(3H)-one (14) and 2,3,4,4a-tetrahydro-3,3,4a-trimethyl-1-thioxo-1H,6H-pyrimido[1,6a][3,1]-benzoxazin-6-one (17) are formed.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 14673 |
| Deposited On: | 12 Nov 2010 13:51 |
| Last Modified: | 02 Jun 2011 12:02 |
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