Alaabta

Silver trifluoromethanesulfonate, oo sidoo kale loo yaqaan AgOTf, waa reagent awood badan oo la taaban karo oo loo isticmaalo isbeddello kiimiko oo kala duwan.Waxay ka tirsan tahay fasalka triflate birta, kuwaas oo aad u faa'iido badan in synthesis organic ay sabab u tahay aysiidh Lewis iyo awoodda ay u dhaqaajiso substrates.One ka mid ah codsiyada muhiimka ah ee trifluoromethanesulfonate silver waa sida kicinta ah ee falcelinta organic.Waxay fududayn kartaa isbeddello kala duwan, oo ay ku jiraan falcelinta samaynta curaarta kaarboon-carbon, sida Friedel-Crafts alkylation iyo falcelinta acylation, iyo sidoo kale falcelinta isku xidhka carbon-nitrogen, sida N-acylation ee amines ama isku-darka amides.Dabeecadda aashitada Lewis ee AgOTf waxa ay u sahlaysaa in ay isku duwdo substrate-ka hodanka ku ah elektarooniga, taasoo horseedaysa firfircoonida curaarta kiimikada gaarka ah iyo fududaynta falcelinta la rabo.Dhaqdhaqaaqeeda catalytic ayaa si gaar ah qiimo ugu leh isku dhafka daawooyinka, agrochemicals, iyo kiimikooyinka wanaagsan.Waxay kicin kartaa falcelinta dib-u-qaabaynta ee kala duwan, sida dib-u-habaynta Beckmann, taas oo u beddela oximes amides ama esters, ama dib-u-habaynta alkolada allylic si ay u sameeyaan xeryahooda carbonyl.Intaa waxaa dheer, waxay gacan ka geysan kartaa falcelinta baaskiilka, taasoo awood u siinaysa samaynta xeryahooda wareegyada leh hababka giraanta adag.Dabeecada aashitada Lewis ee AgOTf ayaa door muhiim ah ka ciyaarta falcelintan iyada oo fududaynaysa dib u habeynta dammaanadda lagama maarmaanka ah iyo tillaabooyinka wareegga wareeggaWaxay dhaqaajin kartaa curaarta CH ee ku dheggan kooxaha shaqeeya, sida kicinta curaarta CH-u-u-duray ama kicinta curaarta allylic ama benzylic CH.Firfircoonidani waxay u oggolaanaysaa hawlgelinta dambe ee curaarta CH, taasoo horseedaysa samaynta curaarta cusub ee kaarboon-kaarboon ama kaarboon-heteroatom.Habkan, oo loo yaqaan firfircoonida CH, waa beer si degdeg ah u koraya oo ku jirta isku-dhafka dabiiciga ah waxayna bixisaa dariiq hufan oo lagu galo qulqulka molecular ee adag. Waxaa xusid mudan in AgOTf ay xasaasi u tahay qoyaanka iyo hawada, sidaas darteed waa in lagu maamulaa xaaladaha la xakameeyey.Caadi ahaan waxaa loo isticmaalaa tiro yar, sida xaddi katalytik ah, taasoo ay ugu wacan tahay falcelinteeda sare.Waa in laga taxadaraa in laga shaqeeyo meel hawo fiican leh lagana ilaaliyo reagent ka soo baxa qoyaankaDabeecaddeeda aashitada Lewis waxay awood u siineysaa inay dhaqaajiso substrates, kor u qaaddo dib u habeynta iyo falcelinta wareegga wareegga, oo ay dhaqaajiso curaarta CH, taasoo horseedaysa sameynta unugyo dabiici ah oo isku dhafan.Si kastaba ha ahaatee, waa in taxaddar la sameeyaa marka la maaraynayo oo la kaydinayo AgOTf si loo hubiyo xasilloonideeda loogana hortago falcelinta aan loo baahnayn.