2357-76-8

Basic information

• Product Name: 3-Buten-1-one,1-(1-methyl-1H-benzimidazol-2-yl)-(9CI)
• Synonyms: 3-Buten-1-one,1-(1-methyl-1H-benzimidazol-2-yl)-(9CI)
• CAS NO: 2357-76-8
• Molecular Weight: 134.269
• Mol File: 2357-76-8.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: 3-Buten-1-one,1-(1-methyl-1H-benzimidazol-2-yl)-(9CI)(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Buten-1-one,1-(1-methyl-1H-benzimidazol-2-yl)-(9CI)(2357-76-8)
• EPA Substance Registry System: 3-Buten-1-one,1-(1-methyl-1H-benzimidazol-2-yl)-(9CI)(2357-76-8)

Safety Data

• Hazardous Substances Data: 2357-76-8(Hazardous Substances Data)

Upstream product

• 1942-45-6 4-Octyne 
• 72726-46-6 tert-butyl(dimethyl)(phenylseleno)silane 
• 18173-64-3 tert-butyldimethylsilanol 
• 862155-20-2 C₇₂H₉₈Te₂ 
• 96013-68-2 tert-butyl(4-(2-(tert-butyldimethylsilyloxy)ethyl)phenoxy)dimethylsilane 
• 67-56-1 methanol 
• 117635-46-8 1-(tert-butyldimethylsilyloxy)-4-((tert-butyldimethylsilyloxy)methyl)benzene 
• 105198-38-7 (S)-(-)-ethyl 2-(tert-butyldimethylsilyloxy)propanoate 
• 92976-56-2 tert-butyldimethyl(1-phenylethoxy)silane 

Downstream Products

• 24858-02-4 vinyl(tert-butyl)dimethylsilane 
• 18162-48-6 tert-butyldimethylsilyl chloride 
• 10000-20-1 1,2-bis(tert-butyldimethylsilyl)hydrazine 
• 74472-22-3 allyl tert-butyldimethylsilane 
• 103872-45-3 1-(tert-butyldimethylsilyl)-1H-pyrrole 

Relevant articles and documents

A janus-headed lewis superacid: Simple access to, and first application of Me3Si-F-Al(ORF)3

Upon reaction of gaseous Me3SiF with the in situ prepared Lewis acid Al(ORF)3, the stable ion-like silylium compound Me3Si-F-Al(ORF)3 1 forms. The Janusheaded 1 is a readily available smart Lewis acid that differentiates between hard and soft nucleophiles, but also polymerizes isobutene effectively. Thus, in reactions of 1 with soft nucleophiles (Nu), such as phosphanes, the silylium side interacts in an orbital-controlled manner, with formation of [Me3Si-Nu]+ and the weakly coordinating [F-Al(ORF)3]-or [(FRO)3Al-F-Al(ORF)3]- anions. If exchanged for hard nucleophiles, such as primary alcohols, the aluminum side reacts in a charge-controlled manner, with release of FSiMe3 gas and formation of the adduct R(H)O-Al(ORF)3. Compound 1 very effectively initiates polymerization of 8 to 21 mL of liquid C4H8 in 50 mL of CH2Cl2 already at temperatures between -57 and -30 8C with initiator loads as low as 10 mg in a few seconds with 100 % yield but broad polydispersities.

A novel, chemoselective and efficient microwave-assisted deprotection of silyl ethers with Selectfluor

A novel microwave-assisted, chemoselective and efficient method for the cleavage of silyl ethers (aliphatic and aromatic) catalyzed by Selectfluor is reported. A wide range of TBS-, TIPS-, and TBDPS-protected alkyl silyl ethers can be chemoselectively cleaved in high yield in the presence of aryl silyl ethers. The chemoselective deprotection of phenolic TBS ethers, and not the TIPS- or TBDPS-protected phenolic ethers, and the deprotection of silyl esters were also achieved under these reaction conditions. In addition, the transetherification and etherification of benzylic hydroxy groups in alcoholic solvents is observed.

Fluoroselenylation of acetylenes with xenon difluoride-diorganyl diselenides and xenon difluoride-phenylseleno(trialkyl)silanes

A new, efficient method of fluoroselenenylation of terminal, and open-chain symmetric and unsymmetric disubstituted acetylenes and cycloalkynes, gives vicinal (E)-fluoroalkenyl selenides in moderate to high yields by addition of selenenyl fluoride equivalents. These are formed in situ from xenon difluoride and diaryl, dibenzyl or primary and secondary dialkyl diselenides. Alternatively, the benzeneselenenyl fluoride equivalent is formed by treatment of more reactive phenylselenotrialkylsilanes with xenon difluoride. The regiochemistry of the addition is strongly dependent on the steric effects of substituents bonded to the acetylene.