α-Methoxy-Benzylmetals : Original Synthesis and Reactivity
摘要:
Although 1-methoxy-1-methylseleno-toluene is efficiently metallated by KDA, the same compound as well as its higher homologues react with t-butyllithium producing l-methoxy benzyllithiums via the C-Se bond cleavage. These species are efficiently alkylated by alkyl halides, even the secondary ones and react with THF in the presence of BF3-OEt2 to produce the homologated tetrahydropyran derivative in good yield. (C) 1997 Published by Elsevier Science Ltd.