Stepwise fluorination of [MeAlN(2,6-i-Pr2C6H3)]3 using trimethyltin fluoride as fluorinating agent

Abstract The fluorination of [MeAlN(2,6- i -Pr 2 C 6 H 3 )] 3 1 using 1 and 2 eq., respectively, trimethyltin fluoride leads to the mono- and difluoro compounds, [FAl(MeAl) 2 (N(2,6- i -Pr 2 C 6 H 3 )) 3 ]·2THF 2 and [(FAl) 2 MeAl(N(2,6- i -Pr 2 C 6 H 3 )) 3 ]·3THF 3 , where each methyl group can be selectively exchanged for terminal fluorine atoms (AlF). The reaction of 1 and 3 eq. of trimethyltin fluoride leads to the trifluoro compound [FAlN(2,6- i -Pr 2 C 6 H 3 )] 3 ·3THF 4 and [Me 2 SnN(2,6- i -Pr 2 C 6 H 3 )] 2 5 as a by-product. The core of compound 5 consists of a tin–nitrogen four-membered Sn 2 N 2 ring.