... Refractive Indices were measured on a Carl Zeiss Abbe type refractometer. ... 3073 w, 2952 m, 2916 m, 1637 m, 1412 s, 1374 m, 1291 m, 1227 s, 1170 m, 1102 m, 1021 m, 902 vs, 831 ... 1 H NMR (200 MHz, CDCl 3 , 25 °C) δ 1.28 (d, J = 6.6 Hz, 6H, CH 3 ), 1.4–1.9 (mult., 2H, CHCH ...