2,4,6-Tripyridino-1,3,5-triazine Trichloride, a New and Mild Esterification Agent for Preparation of Penicillin Esters
摘要:
Cyanuric chloride reacted with 3 molar equivalents of pyridine to give 2,4,6-tripyridinio-1,3,5-triazine trichloride, which was found to condense penicillins with alcohols under mild conditions to afford penicillin esters in good yields. Application to preparation of cephalosporin esters also is discussed.
A Promising 1,3,5-Triazine-Based Anion Exchanger for Perrhenate Binding: Crystal Structures of Its Chloride, Nitrate and Perrhenate Salts
作者:Valery N. Zakharov、Pavel S. Lemport、Vladimir V. Chernyshev、Victor A. Tafeenko、Alexandr V. Yatsenko、Yuri A. Ustynyuk、Sergey F. Dunaev、Valentine G. Nenajdenko、Leonid A. Aslanov
DOI:10.3390/molecules28041941
日期:——
The reaction of pyridine with cyanuric chloride was studied under microwave activation as well as in the presence of silver nitrate. The product of hydrolysis containing two pyridinium rings and chlorideanion was isolated. The structures of these anion exchanger salts with chloride, nitrate and perrhenate anions are discussed.