Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Toyokazu Haga"'
Autor:
Toyokazu Haga, Tsutomu Ishikawa
Publikováno v:
Tetrahedron. 61:2857-2869
To approach more realistic mechanisms for asymmetric aziridine synthesis from guanidinium ylides and aryl aldehydes, reactions were systematically carried out by using a variety of p-substituted benzaldehydes under modified conditions. Two kinds of r
Publikováno v:
Tetrahedron. 57:2701-2710
The modification of sodium bis(2-methoxyethoxy)aluminum hydride (SMEAH) with pyrrolidine provided a highly selective reducing agent to transform N -benzyl-4-ethoxycarbonylpiperidine into N -benzyl-4-formylpiperidine 1 under mild conditions. However,
Publikováno v:
ChemInform. 32
The modification of sodium bis(2-methoxyethoxy)aluminum hydride (SMEAH) with pyrrolidine provided a highly selective reducing agent to transform N -benzyl-4-ethoxycarbonylpiperidine into N -benzyl-4-formylpiperidine 1 under mild conditions. However,
Autor:
Kentaro Yamaguchi, Nana Yajima, Takuya Kumamoto, Akemi Ryoda, Waka Nakanishi, Tsutomu Ishikawa, Masatoshi Kawahata, Toyokazu Haga
Publikováno v:
The Journal of organic chemistry. 73(1)
(+/-)-1,2-Bis(2-methylphenyl)ethylene-1,2-diamine, prepared from benzil and ammonium acetate, was optically resolved as a chiral framework for 2-(1-benzyl-2-hydroxyethyl)imino-1,3-dimethylimidazolidine with 2-methylphenyl pendants at the 4,5-position
Autor:
Yoshikazu Amano, Ken-ichi Kawamoto, Toyokazu Haga, Jun-ichi Onodera, Toshihiro Kumazawa, Shingo Sato, Shigeru Matsuba
Publikováno v:
Chemistry Letters. 24:625-626
Model compounds of the precursor of carthamin 3, 4, and 5 were prepared. And in analogy with the precursor of carthamin (PRE) 1, they were converted into carthamin-type compounds 13, 14, and 15, respectively, when sprayed with peroxidase-H2O2 solutio