Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Tsuneaki Hirashima"'
Publikováno v:
Heteroatom Chemistry. 4:455-458
Urea derivatives were readily synthesized in good yields under quite mild conditions, i.e., at ambient pressure and room temperature by sulfur-assisted carbonylation of primary amines with carbon monoxide followed by oxidation of the resulting ammoni
Publikováno v:
Synthetic Communications. 23:2139-2144
Unsymmetrical oxamides are conveniently synthesized in good yields by a new trapping reaction of unstable carbamoyl lithiums with isocyanates.
Publikováno v:
Tetrahedron Letters. 34:2629-2632
Various substituted 1,2-dihydrophthalic acids were synthesized by electroreduction of phthalic acids in excellent yields. The electrocyclic reaction of 1,2- dihydrophthalic acids or the methyl ester with alkynes gave 1,2-disubstituted benzenes and bi
Publikováno v:
Tetrahedron. 49:2403-2412
Unstable dialkylcarbamoyl lithiums, generated from the reaction of lithium dialkylamides with carbon monoxide, were successfully trapped by sulfur compounds (elemental sulfur, disulfides, carbon disulfide, and carbonyl sulfide) at low temperature, th
Publikováno v:
ChemInform. 22
S,S-Dialkyl dithiocarbonates were easily synthesized in good to excellent yields by the reaction of carbon monoxide with sulfur in the presence of water and triethylamine, followed by alkylation of the resulting salts with alkyl halides.
Publikováno v:
ChemInform. 22
Anodic oxidation in a solution containing a variety of olefins and a small amount of Mn(OAc)2·4H2O brought about Mn+3-mediated carbon—carbon bond formation, such as efficient carboxymethylation of styrene derivatives to the corresponding γ-aryl-
Publikováno v:
ChemInform. 23
Publikováno v:
ChemInform. 23
Electrochemical oxidation of sodium borohydride in diglyme containing aliphatic or aromatic carboxylic acids followed by acid-catalyzed hydrolysis afforded the corresponding primary alcohols in good yields. Furthermore, similar electrochemical oxidat
Publikováno v:
ChemInform. 23
The use of some kinds of glasslike-hard carbons was found to lead to selective synthesis of the corresponding Kolbe coupled products in high yields comparable to the use of a Pt anode in anodic oxi...
Publikováno v:
ChemInform. 22