857479-89-1

Basic information

• Product Name: 857479-89-1
• Synonyms: METHYL 5-BROMO-2-METHYLPENTANOATE;Pentanoic acid, 5-bromo-2-methyl-, methyl ester;methyl ester of/the/ (+-)-5-bromo-2-methyl-valeric acid methyl ester
• CAS NO: 857479-89-1
• Molecular Formula: C7H13BrO2
• Molecular Weight: 209.08092
• Mol File: 857479-89-1.mol
• Article Data: 3

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 857479-89-1(CAS DataBase Reference)
• NIST Chemistry Reference: 857479-89-1(857479-89-1)
• EPA Substance Registry System: 857479-89-1(857479-89-1)

Safety Data

• Hazardous Substances Data: 857479-89-1(Hazardous Substances Data)

Upstream product

• 186581-53-3 diazomethane 
• 17142-61-9 5-Bromo-2-methylpentanoic acid 
• 67-56-1 methanol 
• 201230-82-2 carbon monoxide 
• 1119-51-3 bromopentene 
• 1040724-80-8 dimethyl 2-(3-bromopropyl)-2-methylmalonate 
• 1575-74-2 (+-)-2-methyl-pent-4-enoic acid 

Relevant articles and documents

The scope and mechanism of palladium-catalysed Markovnikov alkoxycarbonylation of alkenes

Hydroesterification reactions represent a fundamental type of carbonylation reaction and constitute one of the most important industrial applications of homogeneous catalysis. Over the past 70 years, numerous catalyst systems have been developed that allow for highly linear-selective (anti-Markovnikov) reactions and are used in industry to produce linear carboxylates starting from olefins. In contrast, a general catalyst system for Markovnikov-selective alkoxycarbonylation of aliphatic olefins remains unknown. In this paper, we show that a specific palladium catalyst system consisting of PdX2/N-phenylpyrrole phosphine (X, halide) catalyses the alkoxycarbonylation of various alkenes to give the branched esters in high selectivity (branched selectivity up to 91%). The observed (and unexpected) selectivity has been rationalized by density functional theory computation that includes a dispersion correction.

7-Acyl-3-(substituted triazolyl thiomethyl)cephalosporins

The compounds of this invention are cephalosporins having various acyl substituents at the 7-position and a substituted triazolyl thiomethyl group at the 3-position of the cephem nucleus and intermediates for the preparation thereof. The 7-acylated compounds have antibacterial activity.