A green process for the preparation of 11-{4-[2-(2-hydroxyethoxy) ethyl]-1-piperazinyl}dibenzo[b,f][1,4]thiazepine

A green process for the synthesis of 11-{4-[2-(2-hydroxyethoxy)ethyl]- 1-piperazinyl}dibenzo[b,f][1,4]thiazepine by the reaction of 11-(1-piperazinyl) dibenzo[b,f][1,4]thiazepine or its dihydrochloride salt with 2-(2-chloroethoxy) ethanol in the presence of an inorganic base and water is reported (conversion 99.9 % in a short time and without any impurities). The metal halides and phase transfer catalyst increase the rate of reaction, especially in water as the solvent.

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Novel Oxidative Desulfurization of a Model Fuel with H2O2 Catalyzed by AlPMo12O40 under Phase Transfer Catalyst-Free Conditions

Journal of Applied Chemistry ◽

10.1155/2013/147945 ◽

2013 ◽

Vol 2013 ◽

pp. 1-7 ◽

Cited By ~ 7

Author(s):

Márcio José da Silva ◽

Lidiane Faria dos Santos

Keyword(s):

Hydrogen Peroxide ◽

Phase Transfer ◽

Oxidative Desulfurization ◽

Phase Transfer Catalyst ◽

Environmentally Benign ◽

Aluminum Salts ◽

Keggin Heteropolyacids ◽

Model Fuel ◽

Catalyzed Reactions ◽

Short Time

A novel process was developed for oxidative desulfurization (ODS) in the absence of a phase transfer catalyst (PTC) using only Keggin heteropolyacids and their aluminum salts as catalysts. Reactions were performed in biphasic mixtures of isooctane/acetonitrile, with dibenzothiophene (DBT) as a model sulfur compound and hydrogen peroxide as the oxidant. Remarkably, only the AlPMo12O40-catalyzed reactions resulted in complete oxidation of DBT into DBT sulfone, which was totally extracted by acetonitrile, reducing the sulfur content of isooctane from the 1000 ppm to <1 ppm. Ranking of catalyst efficiency is as follows: AlPMo12O40 > H3PMo12O40 > AlPW12O40 > H3PW12O40. The absence of a PTC, acidic organic peroxides, and the use of hydrogen peroxide, an environmentally benign oxidant, make up the positive aspects of AlPMo12O40-catalyzed ODS reactions. In these reactions, high rates of DBT removal (ca. 100%) were achieved within a short time (ca. 2 hours) and under mild reaction conditions.

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A Dianionic Phase-Transfer Catalyst Directs the Dearomatization of 2-Naphthols

Synfacts ◽

10.1055/s-0040-01707436 ◽

2020 ◽

Vol 16 (08) ◽

pp. 0966

Keyword(s):

Phase Transfer ◽

Phase Transfer Catalyst

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FREE RADICAL POLYMERIZATION OF METHYL METHACRYLATE IN THE PRESENCE OF PHASE TRANSFER CATALYST—A KINETIC STUDY

International Journal of Polymeric Materials ◽

10.1080/00914030490263469 ◽

2004 ◽

Vol 53 (1) ◽

pp. 95-103 ◽

Cited By ~ 12

Author(s):

M. Dharmendira Kumar ◽

P. Konguvel Thehazhnan ◽

M. J. Umapathy ◽

M. Rajendran

Keyword(s):

Free Radical ◽

Methyl Methacrylate ◽

Kinetic Study ◽

Radical Polymerization ◽

Phase Transfer ◽

Free Radical Polymerization ◽

Phase Transfer Catalyst

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β-Cyclodextrin based polyurethane as eco-friendly polymeric phase transfer catalyst in nucleophilic substitution reactions of benzyl halides in water: An efficient route to synthesis of benzyl thiocyanates and acetates

Catalysis Science & Technology ◽

10.1039/c2cy00375a ◽

2012 ◽

Vol 2 (5) ◽

pp. 1056 ◽

Cited By ~ 17

Author(s):

Ali Reza Kiasat ◽

Simin Nazari

Keyword(s):

Nucleophilic Substitution ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Substitution Reactions ◽

Nucleophilic Substitution Reactions ◽

Benzyl Halides ◽

Efficient Route

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Development of a Recyclable Fluorous Chiral Phase-Transfer Catalyst: Application to the Catalytic Asymmetric Synthesis of α-Amino Acids.

ChemInform ◽

10.1002/chin.200435186 ◽

2004 ◽

Vol 35 (35) ◽

Author(s):

Seiji Shirakawa ◽

Youhei Tanaka ◽

Keiji Maruoka

Keyword(s):

Amino Acids ◽

Asymmetric Synthesis ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Chiral Phase ◽

Catalytic Asymmetric Synthesis ◽

Catalytic Asymmetric

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ChemInform Abstract: Tris(3,6-dioxaheptyl)amine as a Phase-Transfer Catalyst in Phenacyl Ester Synthesis.

ChemInform ◽

10.1002/chin.198816145 ◽

1988 ◽

Vol 19 (16) ◽

Author(s):

R. A. BARTSCH ◽

J. B. PHILLIPS

Keyword(s):

Phase Transfer ◽

Phase Transfer Catalyst ◽

Ester Synthesis ◽

Phenacyl Ester

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β-cyclodextrin grafted on lignin as inverse phase transfer catalyst for the oxidation of benzyl alcohol in H2O

Tetrahedron ◽

10.1016/j.tet.2016.02.036 ◽

2016 ◽

Vol 72 (14) ◽

pp. 1773-1781 ◽

Cited By ~ 12

Author(s):

Zujin Yang ◽

Xia Zhang ◽

Xingdong Yao ◽

Yanxiong Fang ◽

Hongyan Chen ◽

...

Keyword(s):

Benzyl Alcohol ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

Oxidation Of Benzyl Alcohol ◽

Inverse Phase Transfer Catalyst

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Microwave Energy Pretreated In Situ Transesterification of Jatropha Curcas L in the Presence of Phase Transfer Catalyst

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.625.267 ◽

2014 ◽

Vol 625 ◽

pp. 267-270 ◽

Cited By ~ 1

Author(s):

Sintayehu Mekuria Hailegiorgis ◽

Mahadzir Shuhaimi ◽

Duvvuri Subbarao

Keyword(s):

Statistical Model ◽

Jatropha Curcas ◽

Phase Transfer ◽

Phase Transfer Catalyst ◽

In Situ Transesterification ◽

Heat Pretreatment ◽

Seed Particles ◽

Optimum Reaction ◽

Microwave Heat

In the present work, microwave heat pretreatment of jatropha curcas seed particles and use of phase transfer catalyst (PTC) to enhance in-situ transesterification were utilized together. It was observed that use of alkaline BTMAOH as a PTC and microwave heat pretreatment of jatropha curcas seed particles had substantially increased the reaction rate of in-situ transesterification as compared to the reaction conducted with microwave untreated seeds in the absence of BTMAOH as a PTC. Statistical model equation was developed to investigate the interaction effect of reaction variables and establish optimum reaction condition. At optimum condition, experimentally obtained FAME yield (93.7±1.53% w/w) was in close agreement with statistical model predicted FAME yield (96.75%) at 38°C and 37 minutes of reaction time.

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