A magnesium-catalyzed regiodivergent C–Obond cleavage protocol is presented. Readily available magnesium catalysts achieve the selective hydroboration of a wide range of epoxides and oxetanes yielding secondary and tertiary alcohols in excellent yields and regioselectivities. Experimental mechanistic investigations and DFT calculations provide insight into the unexpected regiodivergence and explain
Biosynthesis of the Off-Flavor 2-Methylisoborneol by the MyxobacteriumNannocystis exedens
作者:Jeroen S. Dickschat、Thorben Nawrath、Verena Thiel、Brigitte Kunze、Rolf Müller、Stefan Schulz
DOI:10.1002/anie.200702496
日期:2007.11.5
Synthesis of 1,4,7,7-tetramethylbicyclo[2.2.1]hept-exo-2-ylacylamines
作者:N. G. Kozlov、L. A. Popova、V. A. Knizhnikov
DOI:10.1007/bf00630598
日期:1994.11
Dehydration products of 2-methylisoborneol
作者:R Schumann
DOI:10.1016/s0043-1354(96)00330-2
日期:1997.5
7-Methylenebornane and 2-methyl-2-bornene have previously been identified 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 been based on mass spectral analysis only. The dehydration of MIB under a variety of conditions was reinvestigated and the products fully characterised by H-1 and C-13 n.m.r. and GC-MS. Comparison of EI mass spectra of the dehydration products of MIB with those published previously indicate that earlier assignments of MIB dehydration products are incorrect. (C) 1997 Elsevier Science Ltd.