N-Bromosuccinimide (NBS) Catalyzed Highly Chemoselective Acetalization of Carbonyl Compounds Using...

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2005 Protection Protection O 0345 N-Bromosuccinimide (NBS) Catalyzed Highly Chemoselective Acetalization of Carbonyl Compounds Using Silylated Diols and Pentaerythritol under Neutral Aprotic Conditions. — A variety of carbonyl compounds is converted to acetals by NBS-catalyzed reaction with the Tms-ethers of diols or pentaerythrol under virtually neutral reaction conditions. — (KARIMI*, B.; HAZARKHANI, H.; MALEKI, J.; Synthesis 2005, 2, 279-285; Inst. Adv. Stud. Basic Sci., Gava Zang, Zanjan 45195, Iran; Eng.) — Mais 28- 054

Transcript of N-Bromosuccinimide (NBS) Catalyzed Highly Chemoselective Acetalization of Carbonyl Compounds Using...

Page 1: N-Bromosuccinimide (NBS) Catalyzed Highly Chemoselective Acetalization of Carbonyl Compounds Using Silylated Diols and Pentaerythritol under Neutral Aprotic Conditions.

2005 Protection

ProtectionO 0345 N-Bromosuccinimide (NBS) Catalyzed Highly Chemoselective Acetalization of

Carbonyl Compounds Using Silylated Diols and Pentaerythritol under Neutral Aprotic Conditions. — A variety of carbonyl compounds is converted to acetals by NBS-catalyzed reaction with the Tms-ethers of diols or pentaerythrol under virtually neutral reaction conditions. — (KARIMI*, B.; HAZARKHANI, H.; MALEKI, J.; Synthesis 2005, 2, 279-285; Inst. Adv. Stud. Basic Sci., Gava Zang, Zanjan 45195, Iran; Eng.) — Mais

28- 054

SUBJECT INDEX - Buch.de · SUBJECT INDEX Acetalization: (2-hydroxy-5-methoxyphenyl)-diphenyl-methanol, 248 indium(III) triflate, 258 Acetals, 197 Acetic anhydride, 1 Acetylacetonato(1,5-cyclooctadiene)rhodium(I),

SUBJECT INDEX - Buch.de · SUBJECT INDEX Acetalization: (2-hydroxy-5-methoxyphenyl)-diphenyl-methanol, 248 indium(III) triflate, 258 Acetals, 197 Acetic anhydride, 1 Acetylacetonato(1,5-cyclooctadiene)rhodium(I),

Design and Synthesis of Alternating Regioregular ...chem.lnu.edu.cn/LFS21.pdf · nated with N-bromosuccinimide (NBS) at room temperature Scheme 1. Chemical Structures Reported in

Design and Synthesis of Alternating Regioregular ...chem.lnu.edu.cn/LFS21.pdf · nated with N-bromosuccinimide (NBS) at room temperature Scheme 1. Chemical Structures Reported in

N-silylated benzamidines: versatile building blocks in main group ...

N-silylated benzamidines: versatile building blocks in main group ...

Complexes of Iron(II) with silylated pentalene ligands ...

Complexes of Iron(II) with silylated pentalene ligands ...

Supplementary Information SUPPLEMENTARY …lv2117/SIs/VazquezNatureNano2012SI.pdfSUPPLEMENTARY INFORMATION DOI: ... inorganic salts, ... were added to a mixture of N-bromosuccinimide

Supplementary Information SUPPLEMENTARY …lv2117/SIs/VazquezNatureNano2012SI.pdfSUPPLEMENTARY INFORMATION DOI: ... inorganic salts, ... were added to a mixture of N-bromosuccinimide

Communications Chemie - Bris€¦ · Subsequent addition of an electrophilic halogenating agent (NBS=N-bromosuccinimide) to I forms oxocarbenium II (structure drawn for clarity although

Communications Chemie - Bris€¦ · Subsequent addition of an electrophilic halogenating agent (NBS=N-bromosuccinimide) to I forms oxocarbenium II (structure drawn for clarity although

Nature of N-Bromosuccinimide in Basic Media: The True Oxidizing ...

Nature of N-Bromosuccinimide in Basic Media: The True Oxidizing ...

Mimicking the Behaviors of Oil Contaminated Clays Using ... · The interfacial tension between water and bare silica, silylated silica, silylated silica-octyl and silylated silica-anthracene

Mimicking the Behaviors of Oil Contaminated Clays Using ... · The interfacial tension between water and bare silica, silylated silica, silylated silica-octyl and silylated silica-anthracene

Chemoselective Acetalization of 5-Hydroxymethylfurfural … · 2017. 2. 7. · S1 Electronic Supplementary Information (ESI) for A Bifunctional Cerium Phosphate Catalyst for Chemoselective

Chemoselective Acetalization of 5-Hydroxymethylfurfural … · 2017. 2. 7. · S1 Electronic Supplementary Information (ESI) for A Bifunctional Cerium Phosphate Catalyst for Chemoselective

Research Article Utilization of -Bromosuccinimide as a ...Starch-iodide complex measured at 570 nm (method C) I3 measured at 370 nm (method B) I3 titrated with thiosulphate (titrimetry)

Research Article Utilization of -Bromosuccinimide as a ...Starch-iodide complex measured at 570 nm (method C) I3 measured at 370 nm (method B) I3 titrated with thiosulphate (titrimetry)

Li, Shuai; Xie, Wenyi; Wilt, Meghan; Willoughby, Julie A ... · 1 Thermally stable and tough coatings and films using vinyl silylated lignin Shuai Li1, Wenyi Xie2, Meghan Wilt3, Julie

Li, Shuai; Xie, Wenyi; Wilt, Meghan; Willoughby, Julie A ... · 1 Thermally stable and tough coatings and films using vinyl silylated lignin Shuai Li1, Wenyi Xie2, Meghan Wilt3, Julie

n a ly ti c aalyica Analytical Bioanalytical Guida et … Guida M, Salvatore MM, Salvatore F (2015) A Strategy for GC/MS Quantification of Polar Compounds via their Silylated Surrogates:

n a ly ti c aalyica Analytical Bioanalytical Guida et … Guida M, Salvatore MM, Salvatore F (2015) A Strategy for GC/MS Quantification of Polar Compounds via their Silylated Surrogates:

4,800 122,000 135Mmonly used reagents for a-bromination of ketones include molecular bromine [20], N-bromosuccinimide (NBS) [21]. Recently, various methods have been reported using

4,800 122,000 135Mmonly used reagents for a-bromination of ketones include molecular bromine [20], N-bromosuccinimide (NBS) [21]. Recently, various methods have been reported using

Index [application.wiley-vch.de] · Index a absorption bands 985 absorption spectrum 984, 1031 acetaldehyde (AC) 494, 972 – reactor outlet 345 acetalization 618 acetate 896 acetic

Index [application.wiley-vch.de] · Index a absorption bands 985 absorption spectrum 984, 1031 acetaldehyde (AC) 494, 972 – reactor outlet 345 acetalization 618 acetate 896 acetic

Tropylium Salts as Efficient Organic Lewis Acid Catalysts ... · S1 Tropylium Salts as Efficient Organic Lewis Acid Catalysts for Acetalization and Transacetalization Reactions in

Tropylium Salts as Efficient Organic Lewis Acid Catalysts ... · S1 Tropylium Salts as Efficient Organic Lewis Acid Catalysts for Acetalization and Transacetalization Reactions in

SuggestedsolutionsforChapter37 ( - Home - … (PROBLEM(1(Give!a!mechanism!for!the!formation!of!this!silylated!ene3diol!andexplainwhy! the!Me3SiCl!is!necessary.!! CO2Me CO2Me Me3SiCl

SuggestedsolutionsforChapter37 ( - Home - … (PROBLEM(1(Give!a!mechanism!for!the!formation!of!this!silylated!ene3diol!andexplainwhy! the!Me3SiCl!is!necessary.!! CO2Me CO2Me Me3SiCl

TENDER DOCUMENT Department of Chemistry · 37 N-Bromosuccinimide Alfa Aesar 1 X 5g = 5g 38 Titanium (IV) butoxide Sigma-Aldrich 1 X 5g = 5g . 4 ... Manufacturer for Dealership, Distributorship

TENDER DOCUMENT Department of Chemistry · 37 N-Bromosuccinimide Alfa Aesar 1 X 5g = 5g 38 Titanium (IV) butoxide Sigma-Aldrich 1 X 5g = 5g . 4 ... Manufacturer for Dealership, Distributorship

Research Article Kinetic Treatment of the Reaction of ...downloads.hindawi.com/journals/jsmat/2014/791563.pdfResearch Article Kinetic Treatment of the Reaction of Fructose and N-Bromosuccinimide

Research Article Kinetic Treatment of the Reaction of ...downloads.hindawi.com/journals/jsmat/2014/791563.pdfResearch Article Kinetic Treatment of the Reaction of Fructose and N-Bromosuccinimide

UvA-DARE (Digital Academic Repository)2-Bromobutanoic acid2 2-Bromobutanoic acid was prepared following the general procedure using butyric acid (2.5 g, 28.37 mmol, 1 equiv), N-bromosuccinimide

UvA-DARE (Digital Academic Repository)2-Bromobutanoic acid2 2-Bromobutanoic acid was prepared following the general procedure using butyric acid (2.5 g, 28.37 mmol, 1 equiv), N-bromosuccinimide

Vaclav Jurcik - Development and Application of Novel Metal Free … · 2006. 11. 8. · Aldol Reaction ... NBS N-Bromoacetamide NBA N-Bromosuccinimide NMR Nuclear magnetic reasonance

Vaclav Jurcik - Development and Application of Novel Metal Free … · 2006. 11. 8. · Aldol Reaction ... NBS N-Bromoacetamide NBA N-Bromosuccinimide NMR Nuclear magnetic reasonance