DEHYDRATION PRODUCTS OF 2-METHYLISOBORNEOL

7-Methylenebornane and 2-methyl-2-bornene have previously been identif ied as dehydration or degradation products of 2-methylisoborneol (MIB) , a compound responsible for taste and odour problems in various water environments. Previously, the identification of these products has be en based on mass spectral analysis only. The dehydration of MIB under a variety of conditions was reinvestigated and the products fully char acterised by H-1 and C-13 n.m.r. and GC-MS. Comparison of EI mass spec tra of the dehydration products of MIB with those published previously indicate that earlier assignments of MIB dehydration products are inc orrect. (C) 1997 Elsevier Science Ltd.