A mild and efficient method for selective cleavage of ketals and acetals using lithium chloride in water - dimethyl sulfoxide
作者:Pijus Kumar Mandal、Pinak Dutta、Subhas Chandra Roy
DOI:10.1016/s0040-4039(97)01689-4
日期:1997.10
A mild and efficient neutral aqueous method for selective cleavage of acetals and ketals to the corresponding carbonyl compounds has been established by using LiCl in H2O-DMSO at elevated temperature. While aryl and α,β-unsaturated ketals and acetals underwent smooth cleavage, diaryl, non-aryl and isolated ketals and acetals remained unaffected under the reaction conditions.
Selective Transdithioacetalization of Acetals, Ketals, Oxathioacetals and Oxathioketals Catalyzed by Envirocat EPZ10R
作者:A. S. Gajare、M. S. Shingare、B. P. Bandgar
DOI:10.1039/a800864g
日期:——
Envirocat EPZ10R has been found to be a remarkable reusable heterogeneous catalyst for selective transdithioacetalization of acetals, ketals, oxathioacetals and oxathioketals with HSCH2CH2SH and HSCH2CH2CH2SH.
A General Metal‐Free Protocol for the Visible‐Light‐Driven Protection of Carbonyls
作者:Lorenzo Di Terlizzi、Eirini M. Galathri、Stefano Protti、Christoforos G. Kokotos、Maurizio Fagnoni
DOI:10.1002/cssc.202201998
日期:2023.1.20
Carbonylprotection: This work highlights the potential of arylazo sulfones as non-ionic photoacid generators (PAGs) to promote the efficient conversion of aldehydes and ketones into acetals, ketals, and 1,3-oxazolidines upon visible-light irradiation. This approach takes advantage of the mild conditions employed and exhibits an easy scalability and a broad substrate scope (80 examples included).
Anac, Olcay; Talinli, Naciye, Bulletin des Societes Chimiques Belges, 1993, vol. 102, # 2, p. 79 - 88
作者:Anac, Olcay、Talinli, Naciye
DOI:——
日期:——
The Diels–Alder Reaction Product of β-Ionone and Maleic Anhydride
作者:K. Ravikumar、K. Chandra Mohan、T. Shekharam、J. S. Yadav
DOI:10.1107/s010827019401067x
日期:1995.3.15
The structure of the title compound, 6,7,7-trimethyl-1-(3-oxobutyl)bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylic acid anhydride, C17H22O4, a Diels-Alder reaction product of beta-ionone and maleic anhydride, was solved by direct methods. The three six-membered rings of the bicyclo[2.2.2]oct-5-ene cage all slightly deviate from ideal boat conformations. The 3-oxobutyl side chain has an extended configuration.