5702-49-8Relevant academic research and scientific papers
Conformational Analysis, 18 - Lanthanide-Induced Shift (LIS) Investigation of Some 2-Substituted 1,3-Dioxanes
Abraham, Raymond J.,Wallace, Kerry,Wilkins, Suzanne,Sancassan, Fernando
, p. 1019 - 1024 (1992)
A LIS analysis of 2-isopropyl-1,3-dioxane (1) and 2-methyl-2-phenyl-1,3-dioxane (2) is reported.The monodentate complexing model gives good agreement with the observed shifts in both compounds, whereas the bidentate model (lanthanum binding to both oxygen
Robust acidic pseudo-ionic liquid catalyst with self-separation ability for esterification and acetalization
Shi, Yingxia,Liang, Xuezheng
, p. 1413 - 1421 (2019/05/04)
The novel acidic pseudo-ionic liquid catalyst with self-separation ability has been synthesized through the quaternization of triphenylphosphine and the acidification with silicotungstic acid. The pseudo-IL showed high activities for the esterification with average conversions over 90%. The pseudo-IL showed even higher activities for acetalization than traditional sulfuric acid. The homogeneous catalytic process benefited the mass transfer efficiency. The pseudo-IL separated from the reaction mixture automatically after reactions, which was superior to other IL catalysts. The high catalytic activities, easy reusability and high stability were the key properties of the novel catalyst, which hold great potential for green chemical processes.
A convenient and highly efficient method for the protection of aldehydes using very low loading hydrous ruthenium(III) trichloride as catalyst
Qi, Jian-Ying,Ji, Jian-Xin,Yueng, Chi-Hung,Kwong, Hoi-Lun,Chan, Albert S.C.
, p. 7719 - 7721 (2007/10/03)
A convenient method for the chemoselective protections of both aliphatic and aromatic aldehydes has been developed. Ruthenium(III) trichloride (0.1 mol %) has found to be an highly efficient catalyst in the acetalizations of aldehydes with various simple alcohols such as methanol, ethanol, or diols such as 1,2-ethylanediol and 1,3-propanediol under mild reaction conditions.
SYNTHESIS OF CYCLIC ACETALS FROM ALDEHYDES AND DIOLS MEDIATED BY BUTYLTIN TRICHLORIDE
Marton, Daniele,Slaviero, Pierangelo,Tagliavini, Giuseppe
, p. 359 - 362 (2007/10/02)
A facile and convenient method for the preparation of cyclic acetals from aldehydes and diols utilizing butyltin trichloride as acid catalyst and dehydrating agent is proposed.Some 2-alkyl-1,3-dioxolanes and -dioxans (alkyl = Et and i-Pr) have been prepared under mild conditions. 2-vinyl-1,3-dioxan has also been produced by transacetalization from acrolein dimethyl acetal and 1,3-propanediol.
REACTION OF 2-METHOXY-1,3-DIOXANE WITH GRIGNARD REAGENTS: REAGENT-SUBSTRATE COMPLEXATION AND STEREOELECTRONIC CONTROL.
Bailey, William F.,Croteau, Allan A.
, p. 545 - 548 (2007/10/02)
The stereoelectronically controlled reaction of 2-methoxy-1,3-dioxane (1) with Grignard reagents does not follow the course suggested by the behavior of anancomeric models for the conformational isomers of 1.Treatment of 1 with RMgX leads to the predominant formation of acid labile 3-(1'-methoxyalkoxy)-1-propanols, derived from endocyclic cleavage of the ring C-O bond, and only minor amounts of the expected 2-R-1,3-dioxanes.
