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Usage

Uses

Used in Pharmaceutical Industry:
1-(bromo-methyl)-1-methyl-cyclobutane is used as a synthetic intermediate for the development of various pharmaceutical compounds. Its reactivity and structural features make it a valuable component in the synthesis of drugs with specific therapeutic targets.
Used in Agrochemical Industry:
In the agrochemical sector, 1-(bromo-methyl)-1-methyl-cyclobutane is utilized as a precursor in the production of pesticides and other agrochemicals. Its ability to form complex molecules contributes to the creation of effective and targeted pest control agents.
Used in Specialty Chemicals:
1-(bromo-methyl)-1-methyl-cyclobutane also finds application in the specialty chemicals industry, where it is employed in the synthesis of advanced materials and compounds with unique properties for specific industrial uses. Its versatility in organic reactions is key to its broad application in this field.

Upstream product

• 157-45-9 spiro[2.3]hexane 
• 38401-41-1 (1-methylcyclobutyl)methanol 
• 32936-76-8 1-methylcyclobutane carboxylic acid 

Relevant academic research and scientific papers

Rearrangement of the Grignard reagent from 1-methylcyclobutylmethyl bromide: origins of the methyl substituent effect

1-Methyl substitution leads to a small decrease (ca. 0.45) in the rate of the ring cleavage rearrangement of cyclobutylmethylmagnesium bromide.Comparison with literature data for 3- and 5-membered rings indicates that the methyl substituent shifts the equilibrium in the direction of ring cleavage, mostly by stabilization of the double bond of the open isomer, and possibly partly by destabilization of the organometallic function of the cyclic isomer.The reaction rate is decreased in both directions, probably because of increased transition state steric repulsions.

Hydrogen Abstraction from Spiroalkanes

Hydrogen abstraction from spirohexane by t-butoxyl radicals gave spirohex-2-yl radicals; their rearrangement to cyclobutenylethyl radicals was followed by kinetic e.s.r. spectroscopy.Hydrogen abstraction at the methylene groups adjacent to the cyclopropyl rings in higher spiroalkanes gave spiroalk-2-yl radicals, which rearranged to cycloalkenylethyl radicals too rapidly for detection, together with secondary radicals from abstraction at the other methylene groups in the larger ring.From the measured concentrations of the cycloalkenylethyl and secondary radicals the rate of hydrogen abstraction at the cpm sites relative to the rate of hydrogen abstraction at the secondary sites was determined; significant activation of the cpm hydrogens was found.This activation was attributed to a pseudo-allyl type of effect, i.e., to delocalisation of the unpaired electron into the Walsh orbitals of the cyclopropane ring of the spiroalk-2-yl radicals; semi-empirical SCF-MO calculations supported this explanation.Photobromination of spirohexane occured mainly by SH2 attack of bromine atoms at the cyclopropane methylene carbons with fission of either C-C bond.