摘要
在四醋酸铅的催化下,二氟二碘甲烷(CF2l2,1)与四氟乙烯加成生成1,3-二碘六氟丙烷(ICF2CF2CF2I,3)3与烯烃、炔烃和丙二酸二乙酯阴离子发生电子转移反应.
The addition of difluorodiiodomethane (CF2I2, 1) with tetrafluoroethene induced by Pb (OAc)(4) in acetic acid in an autoclave at 70 degreesC overnight gives 1, 3 - diiodohexafluoropropane(ICF2CF2CF2I, 3) in 80% yield. 3 can add to alkenes in the presence of Zn or Na2S2O4 to afford ICF2CF2CF2CH2CHIR (6) and RCHICH2CF2CF2CF2CH2CHIR (7). Its reaction with phenylacetylene also induced by Na2S2O4 affords ICF2CF2CF2CH = CIPh (9) and ICF2CF2CF2CH = C (Ph) CH = CHIPh (10). The substitution of 3 by malonate anion producing ICF2CF2CR = C(CO2Et)(2) (12) and HCF2CF2CR = C(CO2Et)(2) (13) [R =CH(CO2Et)(2)] can be rationalized in term of SRN I mechanism.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2001年第10期1730-1734,共5页
Acta Chimica Sinica
基金
国家自然科学基金
