Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Takaji Matsumoto"'
Autor:
Kunimori Aoki, Yasunori Ino, Tohru Kobayashi, Noboru Sayo, Takaji Matsumoto, Shigeru Tanaka, Wataru Kuriyama, Osamu Ogata, Takao Saito, Kenya Ishida
Publikováno v:
Organic Process Research & Development. 16:166-171
A ruthenium catalyst for the reduction of esters by hydrogenation has been developed. Processes for the hydrogenation of esters have also been developed for (R)-1,2-propanediol and 2-(l-menthoxy)ethanol. The catalyst shows good catalytic activity for
Autor:
Takahiro Fujiwara, Tsukasa Sotoguchi, Edward L. Way, Eric Merifield, John T. Singleton, Melvyn E. Giles, Kevin R. Anderson, James Tornos, Takao Saito, Stéphanie Atkinson, Takaji Matsumoto
Publikováno v:
Organic Process Research & Development. 14:58-71
Routes to (2S)-2-methyltetrahydropyran-4-one of high optical purity starting from readily available chiral pool precursors and suitable for large-scale manufacture are described. In one approach, the key step is cyclisation of (S)-5-hydroxyhex-1-en-3
Publikováno v:
Tetrahedron Letters. 40:5043-5046
Asymmetric synthesis of ( S )- 5 has been accomplished with an excellent enantiomeric excess by hydrogenation of racemic 5 using ruthenium-BINAP-diamine-KOH system, followed by oxidation. Magnesium enolate of (2 S )-2-methoxycyclohexanone [( S )- 5 ]
Publikováno v:
Journal of Organometallic Chemistry. 473:343-352
Examples of palladium-catalyzed reactions of 2-alkynyl esters via the 2-alkynylpalladium intermediates are presented. The palladium-catalyzed hydrogenolysis of 2-alkynyl formates, which have internal triple bonds, affords alkynes via the 2-alkynylpal
Publikováno v:
Tetrahedron Letters. 34:2513-2516
Reaction of Pd(OAc) 2 with Bu 3 P (1:1) in benzene or THF afforded extraordinarily active zerovalent palladium species as a pale yellow solution, the nature of which has been discussed on the basis of the significant difference in catalytic reactivit
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. 30
Asymmetric synthesis of ( S )- 5 has been accomplished with an excellent enantiomeric excess by hydrogenation of racemic 5 using ruthenium-BINAP-diamine-KOH system, followed by oxidation. Magnesium enolate of (2 S )-2-methoxycyclohexanone [( S )- 5 ]
Publikováno v:
Synlett. 1993:113-114
Publikováno v:
The Journal of Organic Chemistry. 57:1326-1327
Autor:
Wataru Kuriyama, Takaji Matsumoto, Osamu Ogata, Yasunori Ino, Kunimori Aoki, Shigeru Tanaka, Kenya Ishida, Tohru Kobayashi, Noboru Sayo, Takao Saito
Publikováno v:
Organic Process Research & Development; Jan2012, Vol. 16 Issue 1, p166-171, 6p