bingal prathikaranam

sii aadyamaayi kandethiya oru methanophulleerinodulla fulren cyclopropanation prathikaranamaanu fulren rasathanthrathile bingal prathikaranam. 1993ll soodiyam hydride allengil dbu polulla oru aditharayude saannidhyathil diethyl maalonettinte bromo derivetteevinoppam bingal. fulreen uparithalathile eee prathikaranatthinu ishtappetta eratta bondukal rund shadbhujangalude (6-6 bondukal) jangshanukalile hrasvamaaya bondukalaanu, koodaathe sterik straininte aashvaasamaanu prerakashakthi.
rasatantra mekhalayil prathikaranam pradhaanamaan, kaaranam ithu fulreen golatthilekku upayogapradamaaya vipuleekaranangal avatharippikkan anuvadikkunnu. eee vipuleekaranangal avayude gunangale maattunnu, udaaharanathinu layikkunnathum electrochemical swabhaavavum, athinaal saadhyathayulla saankethika prayogangalude paridhi vipuleekarikkunnu.
prathikarana samvidaanam.
eee prathikaranatthinulla prathikarana samvidaanam iprakaaramaanu oru nucleophilic kootticherkkalil electroninte kurravulla fulreen eratta bandhavumaayi prathikarikkunna oru carbonyon allengil enolate srishtikkunna acidic malonate protonine oru kshaaratthil ninnu amoorthamaakkunnu. ithu oru carbonyon srishtikkukayum athu oru intramolecular ring cyclopropain ring closheril oru nucleophilic aliphatic pakarakkaranaayi bromin sthaanabhrashtamaakkukayum cheiyunnu.
vyaapthi.
fulreen rasathanthrathile oru janapriya reethiyaanu bingal prathikaranam. malonettu (halide aattam upayogichu pravartthikkunnu) palappozhum bays, tetrabromomethain allengil iodine ennivayude mishrithathil labikkum. dayalkainailmethanophuleereenulee alkine grouppukalkku pakaram esttar grooppukalumaayaanu prathikaranam nadakkunnathennu ariyappedunnu.
bingal prathikaranatthinu pakaramulla oru prathikaranamaanu fulren diasomethane prathikaranam. oru bingal prathikaranatthil enn-(diphenylmethylene) glycinate esttarukal vyathyasthamaaya oru konjugettu kozhs edukkukayum oru fulren dihydropyrolinode prathikarikkukayum cheiyunnu.
retro-bingal prathikaranam.
electrolytic reduction allengil samyojitha magneeshyam adisthaanamaakki methano group neekkam cheiyunnathinulla protocolukal nilavilundu.

