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2-R-7a-Methyl-3-(spirocyclohexa-2,5-dien-4-one)perhydro-1-indolines were obtained by the reactions of 1-(4-ethoxyphenyl)-2-methylcyclohexanol with nitriles (RCN) in dichloromethane in the presence of concentrated sulfuric acid.
The oxirane-ring opening of butyl glycidyl ether with cyclopentadienylsodium or indenylsodium afforded cyclopentadienyl- and indenyl-substituted alcohols RHCH 2 CH(OH)CH 2 OBu n (R = C 5 H 4 ( 1 ) or 3-C 9 H 6 ( 2 ), respectively), which were used as tridentate ligands. The reactions of these...
The reactions of 3,5,7-trimethyltropolone and 2-( N -benzylamino)tropone with 6-bromo-5,7-dinitrobenzo( e )-1,2,3,4-tetrazine 1,3-di- N -oxide afforded novel bipolar spiro σ-complexes. The kinetic and activation parameters of the R,S -enantiotopomerization of a chiral spiro σ-complex of 2-( N...
An intramolecular homoannular alkylation of one ferrocenyl substituent in spirocyclodimers of 1,3-bis(ferrocenylmethylidene)-2-methylidenecyclohexanes and -cycloheptanes on treatment with trifluoroacetic acid, leading to the formation of polyfused products containing a three-petal system of...
6( E )- and 6( Z )-(3-Ethoxycarbonylpropyl)- and -(3-carboxypropyl)oximes of 16α,17α-cyclohexanopregn-4-ene-3,6,20-trione were synthesized. The reactions of these ester ligands with pentarane-binding proteins of the uterine cytosol and blood serum were studied; the latter exhibits a higher...
Modification of adsorption open capillary columns coated with polytrimethylsilylpropine (PTMSP) was experimentally studied. The modification of PTMSP by solvents (chlorobenzene, pentanol) and hot ethanol improves (up to 40%) the efficiency of capillary columns with a slight (3—7%) decrease in...
Cyclopentadiene (CPD) is oxidized by copper(ii) bromide and chloride in alcohol solutions to form dialkoxy- and haloethers and exhibits a higher reactivity than butadiene. Dialkoxy-, chloroalkoxy-, and dichlorocyclopentenes are formed from CPD and CuCl 2 without catalysts. The reaction...
The methods of synthesis and the reactivity of styrenetricarbonylchromium and its analogs as model objects for the study of the effect of the metal atom on the reactivity of the monomer π-bond and the aromatic ring are described systematically and discussed. These compounds are unique initial...
2-(Alkoxycarbonylmethylidene)-4-aryl-5-(dialkylamino)thiophen-3(2 H )-ones were synthesized by condensation of N , N -(dialkyl)arylthioacetamides with dialkyl acetylenedicarboxylates. Intermediate substituted vinylic sulfides were isolated. When heated or in the presence of an acid or a base,...
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