The Vilsmeier reagent derived from N-formylmorpholine produces chlorothioformates from primary and secondary alkyl xanthates. The major side products are the corresponding alkyl chlorides. Secondary alkyl chlorothioformates give lower yields due to their instability. Treating xanthates with other common chlorinating agents (oxalyl chloride, thionyl chloride) gives only dialkyl thiodicarbonates.
Androgen and glucocorticoidreceptors have been recently described as key players in processes related to prostatecancer and mainly androgenreceptor’s inactivation was shown as an effective way for the prostatecancer treatment. Unfortunately, androgen deprivation therapy usually loses its effectivity and the disease frequently progresses into castration-resistantprostatecancer with poor prognosis
Constructing the OCF<sub>2</sub>O Moiety Using BrF<sub>3</sub>
作者:Youlia Hagooly、Shlomo Rozen
DOI:10.1021/jo801116n
日期:2008.9.1
A general preparation for aromatic and aliphatic, cyclic as well as linear, symmetric and asymmetric difluoromethylenedioxy derivatives is described. The alcohols were reacted with thiophosgene to give thiocarbonates, which in turn were reacted with BrF(3). The fluorination step is complete in seconds with moderate to high yields under mild conditions.