Total yields of compounds (series I).

Compd	R1	R2	Yield (%)	Compd	R1	R2	Yield (%)
Ia	CH2CH2OH		66	Ik	H		61
Ib	CH2CH2OH		64	Il	H		58
Ic	CH2CH2OH		60	Im	H		52
Id	CH2CH2OH		66	In	H		47
Ie	CH2CH2OH		53	Io	H		52
If	CH2CH2OH		50	Ip	H		55
Ig	CH2CH2OH		57	Iq	H		56
Ih	CH2CH2OH		60	Ir	H		54
Ii	CH2CH2OH		55	Is	H		60
Ij	CH2CH2OH		59	It	H		58