81925-13-5

Upstream product

• 87248-50-8 <2R,2'R-(2α,2'α,3aα,3a'α,4α,4'α,7α,7'α,7aα,7a'α)>-2,2'-Oxybis(2,3,3a,4,5,6,7,7a-octahydro-7,8,8-trimethyl-4,7-methanobenzofuran) 
• 108-93-0 cyclohexanol 
• 18530-30-8 (+)-4,7,7-trimethyl-3-oxobicyclo<2.2.1>heptane-endo-2-carboxylic acid 
• 81925-07-7 <1R-(endo,exo)>-3-Hydroxy-4,7,7-trimethylbicyclo<2.2.1>heptan-2-essigsaeure-ethylester 
• 81969-29-1 <1R-(endo,exo)>-3-Hydroxy-4,7,7-trimethylbicyclo<2.2.1>heptan-2-acetonitril 
• 81925-02-2 <1R-(endo,endo)>-3-Hydroxy-4,7,7-trimethylbicyclo<2.2.1>heptan-2-acetonitril 
• 81969-31-5 <3aS-(3aα,4α,7α,7aα)>-3a,4,5,6,7,7a-Hexahydro-7,8,8-trimethyl-4,7-methanobenzofuran-2(3H)-on 
• 81969-32-6 (1R)-4,7,7-Trimethyl-3-oxobicyclo<2.2.1>heptane-endo-2-acetic acid 
• 135682-92-7 D-(+)-methyl endo-3-camphocarboxylate 
• 24399-00-6 <1R-(endo,exo)>-3-Hydroxy-4,7,7-trimethylbicyclo<2.2.1>heptan-2-methanol,4-Methylbenzolsulfonat 
• 81925-03-3 <3aS-(3aα,4α,7α,7aα)>-3a,4,5,6,7,7a-Hexahydro-7,8,8-trimethyl-4,7-methanobenzofuran-2(3H)-imin, Hydrochlorid 
• 81969-34-8 (1R-endo)-1,7,7-Trimethyl-3-<(4-methylphenyl)sulfonyloxymethyl>bicyclo<2.2.1>heptan-2-on 
• 81925-05-5 Ethyl (1R)-4,7,7-trimethyl-3-oxobicyclo<2.2.1>heptane-endo-2-acetate 
• 81925-04-4 <1R-(endo,exo)>-3-Hydroxy-4,7,7-trimethylbicyclo<2.2.1>heptan-2-essigsaeure 

Relevant academic research and scientific papers

Chiral Lactols, I. The 2,3,3a,4,5,6,7,7a-Octahydro-7,8,8-trimethyl-4,7-methano-benzofuran-2-yl Protective Group

The preparation of the tricyclic lactones 11 and 12 starting from optically active camphor derivatives is described with several alternatives for the synthesis of 11.The lactol 20 is obtained from 11 by reduction.Lactol 20 and its derivative 21 (obtained by self-acetalisation of 20) react with a series of alcohols with high diastereoselectivity to yield the α(exo)-acetals 22.