Azasllatrane Methanotysls Pathways: Stereoelectronlc Influences
نویسندگان
چکیده
Trigonal-blpyramldal azasilatranes of the type ZSi(NHCH2CH2hN (Z = H, Me, OEt) sotvolyze In MeOH 10 give N(CH2CH2NH2h (Iren) and ZSI(OMeh. Whereas in· lermediates In this reaction are not detected, ZSi[N. (SiR3)CH2CH2laN species afford delectable intermediates of the type ZSI[N(SIR3)CHtCH2]" (NHCH2CH2b..,, N (n = 1. 2) before complete conversion 10 Iren and ZSI(OMe)3 occurs. In cases where steric encumbrances weaken lhe Si-Nax bond In these molecules, monocycllc Interma· dlates are detected. I n contrast, methanolysls of HSI[N. (BMe2)CH2CH213N gives N(CH2CH2NHBMe2h (and HSi· (OMeh), which In the presence of c 0 30 0 gives (C0 30 )" SI(OMe)4." and the nove l adduc t N· [CH2CH2NHOoB(OC03)Me2] 3' The possible sterlc and electronic Influences of the equatorial substltuents on the solvolysis pathways are discussed.
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