New cascade silylcarbocyclization (SiCaC) of enediynes
摘要:
The Rh(acac)(CO)(2)-catalyzed cascade silylcarbocyclizations (SiCaC) of (6E)- and (6Z)-dodec-6-ene-1,11-diynes stereospecifically give (R*,R*)- and (S*,R*)-bis(exo-methylenecyclopentyl) respectively in good isolated yields.
New cascade silylcarbocyclization (SiCaC) of enediynes
作者:Iwao Ojima、James V. McCullagh、William R. Shay
DOI:10.1016/0022-328x(96)06359-0
日期:1996.8
The Rh(acac)(CO)(2)-catalyzed cascade silylcarbocyclizations (SiCaC) of (6E)- and (6Z)-dodec-6-ene-1,11-diynes stereospecifically give (R*,R*)- and (S*,R*)-bis(exo-methylenecyclopentyl) respectively in good isolated yields.
Tandem Sequential Ring-Closing Metathesis/Diels–Alder/Cross-Metathesis: Formation of Polycyclic Compounds by a New Three-Component Reaction
作者:Marie-Alice Virolleaud、Olivier Piva
DOI:10.1002/ejoc.200600946
日期:2007.4
Polycyclic oxygenated compounds have been generated from penta- or hexadienyl propargyl ethers by a new procedure that combines the selective formation of a 1,3-diene by ring-closingmetathesis (RCM), a Diels–Alder (DA) reaction and subsequent cross-metathesis (CM) with a chosen alkene, which allows the functionalization of the vinyl group generated during the first step. All these processes can be