convenient synthesis of ω-iodoaliphatic carboxylic acids and esters by the reaction of cyclicketones with iodine and hydrogen peroxide in the presence of catalytic CuCl has been developed. ω-Iodoaliphatic carboxylic esters were further used for the efficient preparation of di(2-pyridylmethylamino)alkanoic acids in excellent yields. A simple and convenient synthesis of ω-iodoaliphatic carboxylic acids and
Abrams, Suzanne R., Canadian Journal of Chemistry, 1986, vol. 64, p. 457 - 463
作者:Abrams, Suzanne R.
DOI:——
日期:——
ABRAMS, S. R., CAN. J. CHEM., 1986, 64, N 3, 457-463
作者:ABRAMS, S. R.
DOI:——
日期:——
FUNK R. L.; ABELMAN M. M.; MUNGER J. D., JR., TETRAHEDRON, 42,(1986) N 11, 2831-2846
作者:FUNK R. L.、 ABELMAN M. M.、 MUNGER J. D., JR.
DOI:——
日期:——
Claisen-rearrangement-mediated ring contraction of macrocyclic lactones
作者:Raymond L. Funk、Matthew M. Abelman、John D. Munger
DOI:10.1016/s0040-4020(01)90572-1
日期:——
Macrocyclic ketene acetals 3 undergo Claisenrearrangements smoothly and constitute a viable and general approach to hetero- or carbocyclic ring systems 4. This novel ring contraction process is subject to high internal asymmetric induction (cf. lactones 7 → carbocycles 8) as well as relative asymmetric induction in the rearrangements of ketene acetals derived from lactones 18, 23 and 27. Finally,