464-41-5Relevant articles and documents
Preparation of fragrant substances from bornyl chloride
Ponomarev,Vishnyakova,Rudometova
, p. 695 - 699 (2010)
Organocuprate reagents were used for introducing bornane (1,7,7-trimethylbicyclo[2.2.1]heptane) moiety into the carbon skeleton of α,β-unsaturated carbonyl compounds. Prospects for use of the products obtained as fragrant substances were assessed.
Substituent Chemical Shifts in NMR; Part 4*-1H SCS in Some 2-Substituted Norbornanes and Bornanes
Abraham, Raymond J.,Barlow, Andrew P.,Rowan, Alan E.
, p. 1074 - 1084 (1989)
The 1H chemical shifts and substituent chemical shifts (SCS) were recorded for several monosubstituted norbornanes and bornanes.The observed substituent effects are generally similar for the two ring systems, but differ considerably from those observed for the cyclohexanoid systems in steroids.A consistent trend for the eclipsed C-2-C-3 fragment in this ring system is that all the substituents produce the largest SCS on the trans oriented proton, rather than the spatially nearer cis oriented proton.Indeed, for the OH substituent these SCS are opposite in sign, that for the cis oriented proton being negative (i.e. to high field).This trend is not observed in the cyclohexane system, in which the distance dependence of the vicinal SCS is as expected.The major cross-ring SCS are of the 2-endo substituents with the C-6 protons, giving a large positive SCS at the 6n proton and a small negative SCS at the 6x proton.This trend is very similar to that observed in the cyclohexane ring (axial-axial SCS), and suggests a similar electric field mechanism. Key Words Norbornanes Bornanes 1H NMR Substituent chemical shifts
PRENYLATION OF CAMPHENE - A CARBOCATIONIC ROUTE TO ISOSANTALENE AND ITS DERIVATIVES
Rahman, Azizur,Baeuml, Englbert,Klein, Herbert,Mayr, Herbert
, p. 4119 - 4124 (2007/10/02)
Camphene 1 is converted into 8-chloromethylcamphene 3 via Prins reaction.Treatment of 3 with zinc chloride/ether in the presence of isobutene gives the 1:1 adduct 11, from which isosantalene 7, its isomer 6, and the corresponding alcohol 5 are obtained.
