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Neopentane, also called 2,2-dimethylpropane, is a double-branched-chain alkane with five carbon atoms. Neopentane is a flammable gas at room temperature and pressure which can condense into a highly volatile liquid on a cold day, in an ice bath, or when compressed to a higher pressure.
A condensation reaction of neopentyl glycol with 2,6-di-tert-butylphenol gives CGP-7930. Neopentyl glycol is a precursor to Neopentyl glycol diglycidyl ether. The sequence begins with alkylation with epichlorohydrin using a Lewis acid catalyst. Dehydrochlorination of the resulting halohydrin with sodium hydroxide affords the desired ether. [5]
The absolute stereochemistry of the clerodanes is classified as neo (shown below) or ent-neo (enantiomeric to neo). The neo-clerodanes share the same absolute stereochemistry as clerodin. Approximately 25% of clerodanes have the 5:10 cis ring junction. The remaining 75% have a trans 5:10 ring junction. [2]
How can you tell if they’re safe past their expiration dates? Here, doctors explain how long most vitamins last and any risks associated with taking expired vitamins.
Robinson is in his second season with the Rams. He had two catches and a touchdown in Sunday night’s loss. He has 384 yards and a career-high six touchdowns on 26 catches this season.
Organolithium reagents are useful due to their nucleophilic properties and their ability to form carbon-to-carbon bonds, like in reactions with carbonyls. C 6 H 5 C(CH 3) 2 CH 2 Cl + 2Li → C 6 H 5 C(CH 3) 2 CH 2 Li + LiCl. Neophyl chloride is of interest to organic chemists due to its substitution properties.
January 2, 2025 at 4:45 PM. Cincinnati Bengals quarterback Joe Burrow (9) celebrates after the game-winning touchdown pass to Tee Higgins in overtime of the NFL Week 17 game between the Cincinnati ...
An acyclic alkyl has the general formula of −C n H 2n+1. A cycloalkyl group is derived from a cycloalkane by removal of a hydrogen atom from a ring and has the general formula −C n H 2n−1. [2] Typically an alkyl is a part of a larger molecule. In structural formulae, the symbol R is used to designate a generic (unspecified) alkyl group.