... Chem., Vol. 52, No. ... Coupling constants, J, are given in hertz (Hz) and s, d, t, q, and m indicate singlet, doublet, triplet, quartet, and multiplet, respectively. ... (18) Ingold, C. K. Structure and Mechanism in Organic Chemistry, (19) Tarbell, DS; Yamamoto, Y.; Pope, BM Proc. Natl. ...