Akther, Thamina; Islam, Monarul Md.; Kowser, Zannatul; Matsumoto, Taisuke; Tanaka, Junji; Rahman, Shofiur; Alodhayb, Abdullah; Georghiou, Paris E.; Redshaw, Carl; Yamato, Takehiko published an article in European Journal of Organic Chemistry. The title of the article was 《Synthesis and Structures of [2.n]Metacyclophan-1-enes and their Conversion to Highly Strained [2.n]Metacyclophane-1-ynes》.Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide The author mentioned the following in the article:
The syntheses of syn-[2.n]metacyclophan-1-enes (n = 5, 6, 8) in good yields using the McMurry cyclization of 1,n-bis(3-formyl-4-methoxyphenyl)alkanes are reported. Conversion of syn-[2.6]- and [2.8]metacyclophan-1-enes to the corresponding highly strained syn-type [2.6]- and [2.8]metacyclophane-1-ynes was achieved by successive bromination and dehydrobromination reactions. An attempted trapping reaction of the putative corresponding [2.5]metacyclophane-1-yne by Diels-Alder reaction with 1,3-diphenylisobenzofuran failed due to its smaller ring size and strained structure. X-ray crystallog. analyses show that the triple bonds in syn-[2.6]- and [2.8]metacyclophane-1-ynes are distorted from linearity with bond angles of 156.7° and 161.4°, resp. A DFT (D. Functional Theory) computational study was conducted to determine the stabilities of different conformations of the target compoundsMono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide) was used in this study.
Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide(cas: 111865-47-5) belongs to organobromine compounds. A variety of minor organobromine compounds are found in nature, but none are biosynthesized or required by mammals. Organobromine compounds have fallen under increased scrutiny for their environmental impact. Recommanded Product: Mono(N,N,N-trimethyl-1-phenylmethanaminium) tribromide
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary