Facile Formation of Imidazolinium Salt by Reaction of Corresponding Diamine and Trimethyl Orthoformate in 1,1,1,3,3,3-Hexafluoroisopropanol

Heterocycles ◽  
2014 ◽  
Vol 88 (2) ◽  
pp. 1539 ◽  
Author(s):  
Masahisa Nakada ◽  
Kensuke Usui
Keyword(s):  
Trimethyl Orthoformate

Glycosidation with Trimethyl Orthoformate and Boron Trifluoride*

1957 ◽  
Vol 22 (11) ◽  
pp. 1513-1514 ◽  
Author(s):  
M. L. WOLFROM ◽  
J. W. SPOORS ◽  
R. A. GIBBONS
Keyword(s):  
Boron Trifluoride ◽  
Trimethyl Orthoformate

Efficient pinacol rearrangement mediated by trimethyl orthoformate

1997 ◽  
Vol 38 (48) ◽  
pp. 8315-8318 ◽  
Author(s):  
Yasuyuki Kita ◽  
Yutaka Yoshida ◽  
Sachiko Mihara ◽  
Dai-Fei Fang ◽  
Kazuhiro Higuchi ◽  
...  
Keyword(s):  
Pinacol Rearrangement ◽  
Trimethyl Orthoformate

C-Glycosylflavonoids. II. The synthesis of 7,4'-Di-O-methylpuerarin (8-C-β-D-Glucopyranosyl-7,4'-dimethoxyisoflavone)

1978 ◽  
Vol 31 (12) ◽  
pp. 2699 ◽  
Author(s):  
RA Eade ◽  
FJ Mcdonald ◽  
H Pham
Keyword(s):  
Acid Hydrolysis ◽  
Dimethyl Acetal ◽  
High Yield ◽  
Enol Ether ◽  
Trimethyl Orthoformate

The product of reaction of 2'-acetoxy-4,4'-dimethoxy-3'-(tetraacetyl-β-D-glucopyranosyl)chalcone (4) with thallium(III) nitrate in methanol/trimethyl orthoformate solution gave, after acid hydrolysis, a high yield of 7,4'-di-O-methylpuerarin (2). The dimethyl acetal (6) and the enol ether (7) have been isolated from the reaction of the chalcone (4) with thallium(III) nitrate in methanol. Both the acetal (6) and ether (7) gave 7,4'-di-O-methylpuerarin on reaction with acid or base.

scholarly journals Reaction of Glycerol with Trimethyl Orthoformate: Towards the Synthesis of New Glycerol Derivatives

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 534 ◽  
Author(s):  
Roberto Calmanti ◽  
Emanuele Amadio ◽  
Alvise Perosa ◽  
Maurizio Selva
Keyword(s):  
Ionic Liquids ◽  
Lewis Acid ◽  
Synthetic Approach ◽  
Acid Catalysts ◽  
Lewis Acid Catalysts ◽  
Catalyst Free ◽  
Acidic Ionic Liquids ◽  
Brønsted And Lewis Acid ◽  
Trimethyl Orthoformate

The reactivity of glycerol with trimethyl orthoformate is here described with an emphasis on developing a reliable synthetic approach for glycerol valorization. The glycerol based orthoester 4-(dimethoxymethoxy)methyl)-2-methoxy-1,3-dioxolane (3) was synthesized, under catalytic as well as catalyst-free conditions, by taking advantage of the thermodynamically controlled equilibrium between intermediates. Both Brønsted and Lewis acid catalysts accelerated the attainment of such an equilibrium, particularly Brønsted acidic ionic liquids BSMImHSO4 and BSMImBr were the most effective compounds for this reaction. The kinetic profiles allowed the proposal of a mechanism that accounts for the selectivity of the reaction.

Regiochemistry of the Reaction of 2-Acylcyclohexanones with Trimethyl Orthoformate: A Convenient One-Pot Method to Obtain 7,7-Dimethoxy Alkanoate Methyl Esters

Synlett ◽  
1999 ◽  
Vol 1999 (6) ◽  
pp. 789-791 ◽  
Author(s):  
Marcos A. P. Martins ◽  
Giovani P. Bastos ◽  
Adilson P. Sinhorin ◽  
Alex F. C. Flores ◽  
Helio G. Bonacorso ◽  
...  
Keyword(s):  
Methyl Esters ◽  
One Pot ◽  
Trimethyl Orthoformate

A Convenient One Pot Procedure for N-Methylation of Aromatic Amines Using Trimethyl Orthoformate

1997 ◽  
Vol 27 (4) ◽  
pp. 691-699 ◽  
Author(s):  
Seetharamaiyer Padmanabhan ◽  
N. Laxma Reddy ◽  
Graham J. Durant
Keyword(s):  
Aromatic Amines ◽  
One Pot ◽  
Trimethyl Orthoformate
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