Reaction of Benzylidene Chlorides with О-Methyl Diethylphosphinothioate
摘要:
O-Methyl diethylphosphinothioate reacts with benzylidene chlorides to form arenecarbthioaldehyde trimers and diethylphosphinoyl chloride. This result suggests that the reaction involves initial attack of the thione sulfur atom of the phosphinothioyl group on the methine carbon atom of the gem-dichloride.
S-Methyl diethylthiophosphinate in mono- and di(dechloromethylthioylation) of substituted benzylidene chlorides
作者:M. B. Gazizov、G. D. Valieva、S. Yu. Ivanova、R. A. Khairullin、Yu. S. Kirillina、O. D. Khairullina、Sh. N. Ibragimov
DOI:10.1007/s11172-019-2642-9
日期:2019.10
The main route of a new reaction of (dichloromethyl)arenes with S-methyl diethylthiophosphinate is the attack of the thiol sulfur atom (P–SMe) on the methylene carbon atom. A new method for synthesizing dimethyl dithioacetals of arenecarbaldehydes without using highly toxic methanethiol was developed. The suggested approach involves di(dechloromethylthioylation) of the dichloromethyl group of (dichloromethyl)arenes
Reactions of Benzylidene Chlorides with S-Methyl Diethylphosphinothioate
作者:M. B. Gazizov、G. D. Valieva、S. Yu. Ivanova、R. F. Karimova、R. A. Khairullin、K. S. Gazizova
DOI:10.1134/s1070363219120107
日期:2019.12
S-Methyl diethylphosphinothioate reacted with benzylidene chlorides to give the corresponding aryl(chloro)methyl methyl sulfide and diethylphosphinoyl chloride. The product structure suggests initial attack of the methylsulfanyl group on the CH carbon atom of dichloromethylarene. Arenecarbothialdehyde dithioacetals and trimers and O,O-dialkyl[aryl(methylsulfanyl)methyl]phosphonates were synthesized
2,4,6-Triaryl-dihydro-1,3,5-dithiazines reacted with electrophilicreagents such as p-TsOH·H2O, CF3COOH, HCl, and BF3·OEt2 under reflux in CH3CN to afford α-2,4,6-triaryl-1,3,5-trithianes and β-isomers (3a-d) in good yields. Reactions with I2 gave selectively 3a-d in high yields, while with ICl or IBr gave 3a-d and p-substituted benzylideneamine·HY.