Table 9.

Synthesis of 1,2-dioxolanes 99–102.

Hydroperoxide 96	R1	R2	R3	M	Dioxolane 99–102 (yield, %)	Alkene 103–107 (X, yield, %)
a	Me	Me	Me	Ti	99 (31)	–
b	Me	Me	(CH2)2OMe	Sn	99 (56)	–
b	Me	Me	(CH2)2OMe	Ti	99 (12)	103 (–OOH, 23)
с	4-tert-butyl- cyclohexylidene		Me	Ti	–	104 (–O2–, 31)
c	4-tert-butyl- cyclohexylidene		Me	Sn	100 (42)	–
d	4-tert-butyl- cyclohexylidene		(CH2)2OMe	Sn	100 (59)	–
e	Me	BnOCH2	Me	Ti	101 (12)	105 (=O, 62)
f	Bu	H	Me	Ti	102 (7)	106 (OMe, 63)
g	Bu	H	(CH2)2OMe	Ti	102 (15)	107 (O(CH2)2OMe, the yield was not determined)