Phenylthionitromethane: a versatile reagent for the conversion of aldehydes into α-substituted S-phenyl thioesters
作者:Bernard J. Banks、Anthony G. M. Barrett、Mark A. Russell
DOI:10.1039/c39840000670
日期:——
reacted with phenylthionitromethane (KOH, MeOH) followed by methanesulphonyl chloride (Et3N, CH2Cl2) to give the alkenes, RCHC(SPh)NO2; these reacted with the nuclophiles [Nu = NaOMe, NaOPri potassium Phthalimide, CH2FCONHK, p-MeC6H4SO2Na.2H2O, or KCH(CO2Me)2] in N,N-dimethylformamide (DMF), MeOH, or PriOH at –30°C to give, on subsequent ozonolysis (MeOH–DMF; –78°C) the title thioesters, [RCH(Nu)COSPh](46–79%)
乙醛和异丁醛RCHO与苯硫基硝基甲烷(KOH,MeOH)反应,然后与甲磺酰氯(Et 3 N,CH 2 Cl 2)反应,得到烯烃RCH C(SPh)NO 2;这些与nuclophiles [努=加入NaOMe,NaOPr反应我钾邻苯二甲酰亚胺,CH 2 FCONHK,p -MeC 6 ħ 4 SO 2 Na.2H 2 O,或KCH(CO 2 Me)的2 ]在Ñ,Ñ二甲基甲酰胺(DMF ),MeOH或Pr i在–30°C的条件下进行OH处理,随后进行臭氧分解(MeOH–DMF; –78°C),得到标题硫代酯[RCH(Nu)COSPh](46–79%)。