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Stereochemistry of seven-membered heterocycles. Communication 14. Synthesis and three-dimensional structure of 4-methyl-1,3-dioxa-5,6-benzocycloheptenes respects to the related 2-R-phthalyacetals; the spiroketal of cyclohexanone is realized in the e-Tw form

Two isomeric fourteen-membered bis-dithioacetals derived from (Z)- and (E)-but-2-ene-1,4-dithiols(Z)-But-2-ene-1,4-dithiol was found to undergo isomerization into the E isomer. Condensation of (Z

Stereochemistry of seven-membered heterocycles - 1. Chair-twist inversion in the 2-arylbenzo[e]-1,3-dioxepanesStudies based on IR spectroscopy and the measurements of dipole moments show that the 2-(p-X-phenyl)-benzo[e

Conformational analysis of 2-aminophenyl-, 2-aminobenzyl-, and 2-nitrobenzyl(diphenyl)phosphine oxides

Electrochemical reduction of isomeric dichloro-substituted 1,4-dioxane and tetrahydropyran derivatives

Synthesis of the β isomers of 2,4,6-trisubstituted 1,3,5-trithianes

Stereochemistry of seven-membered heterocycles 11. Isoenergy chair-twist conformation equilibrium in phthalylformal and its 2-phenyl derivative

Conformation of 2-aryl groups in 1, 3-dioxanes

Sulfate group polarization and polarizability and the conformations of the dimethyl sulfates

Conformations of some 1,5-dioxaspiro[5.5]undecanes

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