Deprotonation Pathway in the Reaction of Me6Si2 with MeLi
摘要:
A mixture of 3 mol of Me6Si2 and 1 mol of MeLi in the presence of Pi(O)(NMe2)(3) produced Me3SiLi as the initial product. This then deprotonated excess Me-6- Sit and started an unprecedented transformation leading to (Me3Si)(2)(SiMe2H)CLi (3), whose quench by [(eta(5)-C5H5)Fe(Co)(2)PPh3+] produced {eta(4)-exo-[(Me3Si)(2)C-(SiMe2H)]C5H5}Fe(Co)(2)(PPh3) (2e). In the literature the reaction of Me6Si2 and MeLi gives Me3SiLi and/or Me3SiSiMe2Li (4). The lithium compound 3 is the major product when a previously unnoticed deprotonation pathway Is enhanced by use of an excess of Me6Si2 and a longer reaction time.
Deprotonation Pathway in the Reaction of Me6Si2 with MeLi
摘要:
A mixture of 3 mol of Me6Si2 and 1 mol of MeLi in the presence of Pi(O)(NMe2)(3) produced Me3SiLi as the initial product. This then deprotonated excess Me-6- Sit and started an unprecedented transformation leading to (Me3Si)(2)(SiMe2H)CLi (3), whose quench by [(eta(5)-C5H5)Fe(Co)(2)PPh3+] produced {eta(4)-exo-[(Me3Si)(2)C-(SiMe2H)]C5H5}Fe(Co)(2)(PPh3) (2e). In the literature the reaction of Me6Si2 and MeLi gives Me3SiLi and/or Me3SiSiMe2Li (4). The lithium compound 3 is the major product when a previously unnoticed deprotonation pathway Is enhanced by use of an excess of Me6Si2 and a longer reaction time.