Drawing bicyclic structures

Draw the structure of Cecropia juvenile hormone and process it automatically. Save only the intermediate precursors which finally lead to the bicyclic compound B used by the Syntex group. 

Problem 5.L (a) Write the structures for n-hexane and as many of its isomers as you can. (b) Draw the structure of cyclohexane, methylcyclopentane, the isomers of dimethylcyclobutane, and isomers of trimethylcyclopropane. Note that they all correspond to CeHi2. (c) Draw the structure of bicyclo[2.2.0]hexane. Are there any other bicyclic isomers corresponding to CeHio ... 

Draw the structures of the two products obtained by hydrogenation of the following unsaturated bicyclic compound. Will they be obtained in equal amounts ... 

Draw the structure of the hydroboration-oxidation product of the following bicyclic hydrocarbon. 

Draw the structures of two possible bicyclic ethers that could result from the intramolecular displacement of bromide by the alkoxide derived from the following dibromo alcohol. Which compound should predominate ... 

If you have trouble seeing how the bicyclic ffamewoik is produced by this reaction, consider the following drawing in which the bond angles have been distorted to show how the bicyclic structure is formed ... 

When the cyclic acyloin, c-(CH2)iqCOCH(OH) was heated with formamide, in the presence of acid, a bicyclic oxazole, C13H21NO, was formed what is its structure This bicyclic oxazole was converted by exposure to O2, then heating, into the acyclic cyano-acid, H02C(CH2)iqCN draw a mechanism for the transformation. 

One compound whose molecular formula is C4H6 is a bicyclic compound. Another compound with the same formula has an infrared absorption at roughly 2250 cm (the bicyclic compound does not). Draw structures for each of these two compounds and explain how the IR absorption allows them to be differentiated. 

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