𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Kinetic control in the benzylidenation of some 1-alkylcyclohexane-cis-1,2-diols

✍ Scribed by Neil Baggett; Mohammed Mosihuzzaman; John M. Webber

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
616 KB
Volume
136
Category
Article
ISSN
0008-6215

No coin nor oath required. For personal study only.

✦ Synopsis

Acid-catalysed benzylidenation reactions of a series of alkyl substituted derivatives of cyclohexane-cis-1,2-diol have been studied. Preferential formation of the exe-phenyl benzyiidene acetal was observed in the initial kinetic phase of the reaction of the 1-tert-butyl derivative, whereas the e~~o-phenyl acetal was preferentially formed from other dials. This behaviour has been rationalised by consideration of the probable stabilities of conformations of the oxocarbonium ion intermediate.

πŸ“œ SIMILAR VOLUMES

Desymmetrization of unsaturated meso-1,2
Desymmetrization of unsaturated meso-1,2-diols via an intramolecular haloetherification of ene acetals: A remarkable kinetic control
✍ Hiromichi Fujioka; Yasushi Nagatomi; Naoyuki Kotoku; Hidetoshi Kitagawa; Yasuyuk πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 French βš– 248 KB

Haloetherification reaction of the chiral ene acetals derived from unsaturated meso-1,2-diols and chiral non-racemic norbornene aldehyde proceeded in an intramolecular manner with an unexpectedly high kinetic control. This method has been successfully employed for the desymmetrization of unsaturated

Kinetics of base hydrolysis of tris-(1,1
Kinetics of base hydrolysis of tris-(1,10-phenanthroline)iron(II) and of solvolysis of cis-dichlorobis(1,2-ethanediamine)cobalt(III) in water + diol mixtures
✍ S. Alshehri; J. Burgess πŸ“‚ Article πŸ“… 1993 πŸ› John Wiley and Sons 🌐 English βš– 531 KB

Rate constants for base hydrolysis of the trzs-( 1,lO-phenanthroline)iron(II) cation and for solvolysis of the cis-dichlorobis(l,2-ethanediamine)cobalt(III~ cation have been measured in binary aqueous mixtures containing l,a-ethanediol, 1,2or 1,4-butanediol, 1,2-or 1,6-hexanediol, 1-propanol, or t-b