Ghosh, Harisadhan ; Sarkar, Soumya ; Ali, Abdur Rezzak ; Patel, Bhisma K. (2010) Oxidative desulfurization of disubstituted thioureas using Pb(II) salts and investigation of pKa-dependent regioselective N-acylation Journal of Sulfur Chemistry, 31 (1). pp. 1-11. ISSN 1741-5993
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Official URL: https://www.tandfonline.com/doi/abs/10.1080/174159...
Related URL: http://dx.doi.org/10.1080/17415990903295686
Abstract
A highly efficient method for the N-acylation of both symmetrical and unsymmetrical thioureas by the use of lead (II) salts and triethylamine has been achieved. The reaction gives regioselective N-acylated product for unsymmetrical thiourea. For unsymmetrical thiuourea, regioselective N-acylation takes place towards the amine having lower pKa. A linear correlation between the pKas of the amines and the regioselective N-acylation is found. Another attractive feature of this transformation is that lead sulfide, which is important to material science, is obtained as a side product (nanocubes of 20 nm).
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Taylor and Francis Group. |
| Keywords: | Thiourea; Desulfurization; N-acylation; Urea; Regioselective |
| ID Code: | 113928 |
| Deposited On: | 30 Apr 2018 12:26 |
| Last Modified: | 30 Apr 2018 12:26 |
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