Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Mikio Kawada"'
Publikováno v:
Tetrahedron. 50:475-486
The allylic alcohol, obtained by the reaction of C-17-keto steroid with isopropenyllithium, was converted to carbonate. Its hydrogenolysis with triethylammonium formate affords C-17β-isopropenyl group. Steroid side chain units were introduced by the
Publikováno v:
Tetrahedron Letters. 34:2161-2164
The decarboxylation-hydrogenolysis of propargyl formates which have internal acetylenic bond proceeds smoothly at room temparature by the use of a Pd(0) catalyst prepared from Pd(acac)2 and n-Bu3P (1 : 1) to afford disubstituted acetylenes in high yi
Publikováno v:
Tetrahedron Letters. 34:111-114
A highly stereoselective synthetic method for cis-2-hydroxymethyl-6-alkyltetrahydropyrans is described by an intramolecular 1,4-addition of alcohol to
Publikováno v:
Tetrahedron. 49:5483-5493
Both the cis and trans ring junctions can be generated selectively in hydrindane, decalin and steroid systems by the palladium-catalyzed regioselective and stereospecific decarboxylation-hydrogenolysis of allylic formates. The trans junctions were fo
Publikováno v:
ChemInform. 24
The decarboxylation-hydrogenolysis of propargyl formates which have internal acetylenic bond proceeds smoothly at room temparature by the use of a Pd(0) catalyst prepared from Pd(acac)2 and n-Bu3P (1 : 1) to afford disubstituted acetylenes in high yi
Publikováno v:
ChemInform. 23
Publikováno v:
ChemInform. 22
Alkali metal hydride promoted addition of allylic alcohols to aryl vinyl sulfoxides at room temperature gives 2-allyloxyethyl aryl sulfoxides, which, on heating, are converted into γ,δ-unsaturated aldehydes via allylic vinyl ethers.
Publikováno v:
ChemInform. 23
Publikováno v:
ChemInform. 23
Bicyclo[3.3.0]octane frameworks were synthesized, starting from 4-[(tert-butyldimethylsilyl)oxy]-2-cyclopenten-1-one. The key reaction involved the tandem Claisen rearrangement-aldol condensation-elimination sequence.
Publikováno v:
ChemInform. 23
Homoannular conjugated dienes in decalin systems can be prepared by the palladium-catalyzed elimination reaction of α-allylic carbonates and heteroannular dienes are obtained from β-allylic carbonates.