Photodecomposition of 1,2-difluoro-1,2-di-iodoethene: formation of 1,2-difluoroethyne
摘要:
Photolysis of trans-1,2-difluoro-1,2-di-iodoethene with 248 nm radiation from an excimer laser yielded difluoroethyne, cis-1,2-difluoro-1,2-di-iodoethene and 1,2,3,4-tetrafluoro-3,4-di-iodocyclobutene. Potential pathways for these products are presented in terms of the energetics of the reaction, and the dependencies of product formation on pressure and extent of conversion are discussed.
(E)-1,2-Difluoro-1-iodo-2-trialkylsilanes—A useful synthon for the addition of the [IFC CF] unit to activated electrophiles
作者:Ya-Bo He、Ba V. Nguyen、Donald J. Burton
DOI:10.1016/j.jfluchem.2011.07.013
日期:2011.11
Fluoride ion catalyzed reaction of (E)-IFCCFSiR3 with activated aromatic aldehydes and ketones and activated perfluoroaromatics, such as pentafluoropyridine and perfluorotoluenes, transfers the [IFCCF] unit to the activated electrophiles to stereospecifically provide (E)-1,2-difluoro-1-iodosubstituted derivatives. Aluminum chloride catalyzed reaction of (E)-1,2-difluoro-1-iodo-2-trialkylsilanes with
The stereoselective preparation of cis and trans-1,2-difluoroethylene synthons
作者:Simonetta A. Fontana、Charles R. Davis、Ya-Bo He、Donald J. Burton
DOI:10.1016/0040-4020(95)00861-2
日期:1996.1
Isomerization of (Z)-HFC=CFSiEt3 with ultraviolet light and catalytic phenyl disulfide has resulted in a high yield, stereoselectivepreparation of cis-1,2-difluorotriethylsilylethylene, (E)-HFC=CFSiEt3. (E)-HFC=CFSiEt3 has been converted to (Z)-F(Bu3Sn)C=CFSiEt3, (Z)-IFC=CFSiEt3, (Z)-BrFC=CFSiEt3, (Z)-Me3SiFC=CFSiEt3, and (Z)-IFC=CFI. (E)-IFC=CFI has been prepared from (Z)-HFC=CFSiEt3.
Photodecomposition of 1,2-difluoro-1,2-di-iodoethene: formation of 1,2-difluoroethyne
作者:H.B. Friedrich、D.C. Tardy、D.J. Burton
DOI:10.1016/s0022-1139(00)80473-x
日期:1993.11
Photolysis of trans-1,2-difluoro-1,2-di-iodoethene with 248 nm radiation from an excimer laser yielded difluoroethyne, cis-1,2-difluoro-1,2-di-iodoethene and 1,2,3,4-tetrafluoro-3,4-di-iodocyclobutene. Potential pathways for these products are presented in terms of the energetics of the reaction, and the dependencies of product formation on pressure and extent of conversion are discussed.