... (c) De Kimpe, N.; Verhe, R.; De Buyck, L.; Schamp, N. Org. Prep. Roc. Intl. 1980, 12, 49-180. 0022-326318811953-2991$01.50/0 very little is known about their chemistry. ... 1948, 272-275. 0 1988 American Chemical Society Page 2. 2992 J. Org. Chem., Vol. 53, No. 13, 1988 ...