METALLIERUNGS- UND SUBSTITUTIONS-REAKTIONEN AN DER λ3-As=C-N-STRUKTURGRUPPE DER 1H-1,3-BENZAZARSOLE

Article abstract of DOI:10.1016/S0022-328X(00)99270-2

In contrast to arsabenzenes the ?-excess aromatic 1H-1,3-benzazarsoles can be alkylated at the arsenic atom as well as lithiated in positions 1 or 2 without addition of LiN(i-Pr)2 and t-BuLi to the As=C (4p-2p)? bond.Alkylations and acylations of the ambident 1-lithio derivatives and substitution reactions of the 2-lithiobenzazarsole are described and the 1H and 13C NMR data of the compounds obtained are given.