Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Trichloroacetic anhydride"'
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 81:947-957
Thermal decarboxylation of sodium trichloroacetate in 1,2-dimethoxyethane yields NaCl, CO2, CO, CCl4, perchloroisopropenyl acetate (I) and perchloro-1,2-dimethylenecyclobutane (II). Strong evidence is presented for the intermediate formation of trich
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 77:258-266
By adding one equivalent of trichloroacetic acid to ethoxyacetylene (I) an addition product (IIIa) is formed. The reverse procedure if carried out very slowly gives rise to a different compound (VII), which can also be obtained from ethoxyacetylene a
Autor:
Shannon Condon, Andrew J. Hazelwood, Roman Davis, Elie A. Tabet, Ben Andrews, John Grimes, John Corona, Kae M. Bullock
Publikováno v:
Synthetic Communications. 39:2664-2673
Friedel–Crafts cyclization products were obtained using 1.1 equivalents of environmentally benign trichloroacetic anhydride as sole reagent and solvent. The resulting ketones included benzothiepins, benzothiopyrans, benzoxepins, dibenzothiepins, di
Publikováno v:
Tetrahedron Letters. 46:6855-6859
A fluoride ion-promoted direct esterification of tert-butyldimethylsilyl- (TBDMS), or triisopropylsilyl (TIPS)-protected glycerol derivatives by means of trichloroacetic anhydride (TCAA), followed by removal of the trichloroacetyl transient protectio
Publikováno v:
Tetrahedron Letters. 42:585-588
The addition of a series of organocopper (alkyl, vinyl, allyl, and ethynyl) reagents to 3-acyl- N -alkylpyridinium salts, followed by acylation of the intermediate 1,4- or 1,2-dihydropyridines with trichloroacetic anhydride has been studied.
Publikováno v:
Tetrahedron Letters. 40:3961-3964
The addition of a series of stabilized carbon nucleophiles to 3-acyl-1-alkylpyridinium salts. followed by acylation of the intermediate dihydropyridines with trichloroacetic anhydride has been studied. The C-4 adducts resulting from the addition of �
Publikováno v:
Tetrahedron Letters. 39:9275-9278
3,5-Diacyl-4-phenyl-1,4-dihydropyridines have been synthesized via a regio- and chemoselective addition of Ph 2 Cu(CN)Li 2 to β-substituted N -alkylpyridinium salts, followed by acylation of the intermediate 1,4-dihydropyridines with trichloroacetic
Publikováno v:
Russian Chemical Bulletin. 42:2014-2017
The interaction of 2-amino-1,3,4-oxadiazole-5-carboxamidoxime with nitriles in the presence of ZnCl2 and HCl or with trichloroacetic anhydride affords 2-amino-5-(5R-1,2,4-oxadiazolyl-3)-1,3,4-oxadiazoles. Their reactions with N-nucleophiles have been
Autor:
Maddamsetty V. Rao, Ahmed Kamal
Publikováno v:
ChemInform. 22
Porcine pancreatic lipase catalyzes the specific hydroxyl acylation of 2-propanol amines with enantioselectivity employing trichloroacetic anhydride in organic solvents.
Autor:
D. I. Efremov, V. V. Shchepin
Publikováno v:
ChemInform. 26