Oxime ethers of 2,6 dioxabicyclooctanones of the formula I, ##{TAIL ~ STR6}## in which {HEAD ~ R1} and R2 are the same or different and are selected from 
Oxime ethers of 2,6 dioxabicyclooctanones of the formula I , # # { TAIL ~ STR6 } # # in which { HEAD ~ R1 } and R2 are the same or different and are selected from
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH REL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH