An aryne triggered ring-opening fluorination of cyclic thioethers with potassium fluoride
作者:Rong Fan、Binbin Liu、Tianyu Zheng、Kun Xu、Chen Tan、Tianlong Zeng、Shuaisong Su、Jiajing Tan
DOI:10.1039/c8cc03766c
日期:——
report an aryne triggered ring-opening fluorination protocol of a great variety of saturated sulfur heterocycles. A key factor for the success is the identification of a suitable mediator. Compared to previous methods, this transition-metal free protocol employs low-cost potassium fluoride as the fluorine source. The operational simplicity and mild reaction conditions allow for the rapid synthesis of a
Organosulfides are a common class of structure units in bioactive molecules and functional materials motivating continuous developments of efficient synthetic methods. Herein, we report an electrophilic aryne-activated ringopening protocol of one or two heteroatom containing saturated sulfur heterocycles. This three-component transformation proceeds under mild reaction conditions and displays exceptional
irradiation of organic disulfides in aldehyde solvents resulted in the reductive fission of the S–S linkage, giving an equimolar mixture of the corresponding thiol and the thiol acylate in a good yield. The cyclic disulfides gave mono S-acylated dithiols. The reaction proceeded by means of the photo-initiated radicalchainmechanism, and AIBN (azobisisobutyronitrile) effected the same reaction under thermal
[EN] MONOBACTAMS AND METHODS OF THEIR SYNTHESIS AND USE<br/>[FR] MONOBACTAMES ET PROCÉDÉS DE SYNTHÈSE ET D'UTILISATION DE CES DERNIERS
申请人:HARVARD COLLEGE
公开号:WO2015103583A1
公开(公告)日:2015-07-09
Described herein are monobactam antibiotics of Formula (I), (Ι'), (II), and (II'), along with methods and intermediates for preparing these compounds. Pharmaceutical compositions and methods of treating infectious diseases using the monobactams are also provided.