191034-64-7

Upstream product

• 18871-66-4 N,N-dimethylacetamide dimethyl acetal 
• 191034-60-3 (E)-(2R,5S)-5-(tert-Butyl-dimethyl-silanyloxymethyl)-3,4-dimethyl-8-trityloxy-oct-3-en-2-ol 

Downstream Products

• 191034-80-7 (3S,4S)-4-{[(tert-bytyldimethylsilyl)oxy]methyl}-3-methyl-7-(trityloxy)-3-[2-(trityloxy)ethyl]heptan-2-one 
• 191034-82-9 (3S,4S)-5-Hydroxy-4,5-dimethyl-4-(2-trityloxy-ethyl)-3-(3-trityloxy-propyl)-dihydro-furan-2-one 
• 191034-90-9 (3S,4S)-5-hydroxy-4,5-dimethyl-4-[2-(trityloxy)ethyl]-3-[3-(trityloxy)propyl]pyrrolidin-2-one 
• 191034-86-3 (3S,4S)-4-methyl-5-methylene-4-[2-(trityloxy)ethyl]-3-[3-(trityloxy)propyl]dihydrofuran-2-one 
• 191034-94-3 (3S,4S)-4-methyl-5-methylene-4-[2-(trityloxy)ethyl]-3-[3-(trityloxy)propyl]pyrrolidin-2-one 
• 191034-76-1 (S)-3-[(S)-1-(tert-Butyl-dimethyl-silanyloxymethyl)-4-trityloxy-butyl]-3,4-dimethyl-hexane-1,4,5-triol 

Relevant academic research and scientific papers

Stereocontrolled synthesis of a nonracemic vitamin B12 A-B semicorrin

The first synthesis of a vitamin B12 A-B semicorrin 44 is described. Both A and B rings were prepared from the same precursor, enamide 40, which is obtained by a sequence of sigmatropic rearrangements and a biomimetic oxylactonization. The coup

Highly Stereoselective Synthesis of Tetrasubstituted Alkenes via -Wittig Rearrangement

A highly stereoselective synthesis of tetrasubstituted alkenes via the sequence Horner-Wadsworth-Emmons-, Grignard- and -Wittig reaction is described, eight examples are given. - Keywords: 2,3-Wittig rearrangement, Claisen rearrangement, Horner-Wadsworth-Emmons reaction, tetrasubstituted alkenes.