scholarly journals Efficient synthesis of 3-sulfolenes from allylic alcohols and 1,3-dienes enabled by sodium metabisulfite as a sulfur dioxide equivalent

2018 ◽  
Vol 16 (19) ◽  
pp. 3605-3609 ◽  
Author(s):  
Hang T. Dang ◽  
Vu T. Nguyen ◽  
Viet D. Nguyen ◽  
Hadi D. Arman ◽  
Oleg V. Larionov
Keyword(s):  
Sulfur Dioxide ◽  
New Method ◽  
Allylic Alcohols ◽  
Sodium Metabisulfite ◽  
Efficient Synthesis

The new method enables a simple and efficient synthesis of 3-sulfolenes from 1,3-dienes and allylic alcohols using sodium metabisulfite.

Efficient synthesis of tetrahydrofurans with chiral tertiary allylic alcohols catalyzed by Ni/P-chiral ligand DI-BIDIME

2021 ◽  
Author(s):  
Yu Mu ◽  
Tao Zhang ◽  
Yaping Cheng ◽  
Wenzhen Fu ◽  
Zuting Wei ◽  
...  
Keyword(s):  
Reductive Cyclization ◽  
Allylic Alcohols ◽  
Chiral Ligand ◽  
Efficient Synthesis

Efficient nickel-catalyzed stereoselective asymmetric intramolecular reductive cyclization of O-alkynones with P-chiral bisphosphorus ligand DI-BIDIME is reported.

Organoselenium-Catalyzed, Hydroxy-Controlled Regio- and Stereoselective Amination of Terminal Alkenes: Efficient Synthesis of 3-Amino Allylic Alcohols

2015 ◽  
Vol 17 (8) ◽  
pp. 1834-1837 ◽  
Author(s):  
Zhimin Deng ◽  
Jialiang Wei ◽  
Lihao Liao ◽  
Haiyan Huang ◽  
Xiaodan Zhao
Keyword(s):  
Allylic Alcohols ◽  
Efficient Synthesis ◽  
Terminal Alkenes

Oxidation of 2-methylpyrroles with perchlorinated iron(III) metalloporphyrin catalysts: a versatile synthesis of symmetric and asymmetric dipyrromethanes

1998 ◽  
Vol 76 (10) ◽  
pp. 1467-1473 ◽  
Author(s):  
Veranja Karunaratne ◽  
David Dolphin
Keyword(s):  
Catalytic Oxidation ◽  
Allylic Alcohols ◽  
The Novel ◽  
Efficient Synthesis ◽  
Mild Conditions ◽  
Metalloporphyrin Catalysts

A variety of substituted 2-methylpyrroles (3-8) were oxidized using the metalloporphyrin catalysts iron(III) meso-tetra(2,6-dichloro-3-sulphonatophenyl)-β-octachloroporphyrin chloride 1 and iron(III) meso-tetra(2,6-dichlorophenyl)-β-octachloroporphyrin chloride 2 under very mild conditions. Treatment of the resulting allylic alcohols 3a-8a with α-free pyrroles 9 and 10 resulted in a very efficient synthesis of the corresponding dipyrromethanes 3b-8b and 3c-8c. Furthermore, the above allylic alcohols when treated with furfurylamine produced the novel (2-furylmethyl)-2-pyrrolylmethylamines 3d-8d.Key words: catalytic oxidation, metalloporphyrins, pyrroles, dipyrromethanes, polyhalogenated porphyrins.

Benzylic C(sp3)–H bond sulfonylation of 4-methylphenols with the insertion of sulfur dioxide under photocatalysis

2018 ◽  
Vol 54 (79) ◽  
pp. 11172-11175 ◽  
Author(s):  
Xinxing Gong ◽  
Jiahao Chen ◽  
Lifang Lai ◽  
Jiang Cheng ◽  
Jiangtao Sun ◽  
...  
Keyword(s):  
Sulfur Dioxide ◽  
Sodium Metabisulfite ◽  
Three Component Reaction

Sulfonylation of the benzylic C–H bond is developed through a three-component reaction of aryldiazonium tetrafluoroborates, 4-methylphenols and sodium metabisulfite (Na2S2O5). The inorganic sulfite of sodium metabisulfite is used as the SO2 surrogate.

Collaborative Study on Assay of Sulfur Dioxide in Dried Apricots

1963 ◽  
Vol 46 (4) ◽  
pp. 618-622
Author(s):  
John E Brekke
Keyword(s):  
Sulfur Dioxide ◽  
Collaborative Study ◽  
Colorimetric Method ◽  
New Method ◽  
Test Material ◽  
Material Recovery

Abstract The official (Monier-Williams) method for sulfur dioxide determination in food was compared with a new colorimetric method in a collaborative study. Dried apricots were the test material. Recovery of S 0 2 by the colorimetric method was found to be satisfactory The new method gave results not significantly different from the Monier- Williams volumetric assay but significantly different from the Monier-Williams gravimetric assay.

A new method for evaluating sulfur dioxide tolerance of certain trees

1991 ◽  
Vol 39 (1-2) ◽  
pp. 85-94 ◽  
Author(s):  
M. S. R. Murthy ◽  
O. Bhagya Lakshmi ◽  
S. H. Raza ◽  
Adeel Ahmed
Keyword(s):  
Sulfur Dioxide ◽  
New Method
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