39576-33-5

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• 39576-32-4 Benzoic acid 1,3-dimethyl-3-(2-methyl-propenylideneamino)-butyl ester 
• 107-41-5 2-methyl-2,4-pentanediol 
• 39575-96-7 2-isopropyl-4,4,6-trimethyl-5,6-dihydro-4H-[1,3]oxazine 
• 94806-35-6 (S)-4-Methyl-4-penten-2-ol 
• 98-88-4 benzoyl chloride 

Relevant academic research and scientific papers

Copper-Catalyzed Enantiotopic-Group-Selective Allylation of gem-Diborylalkanes

We report a copper-catalyzed enatiotopic-group-selective allylation of gem-diborylalkanes with allyl bromides. The combination of copper(I) bromide and H8-BINOL derived phosphoramidite ligand proved to be the most effective catalytic system to provide various enantioenriched homoallylic boronate esters, containing a boron-substituted stereogenic center that is solely derived from gem-diborylalkanes, in good yields with high enantiomeric ratios under mild conditions. Experimental and theoretical studies have been conducted to elucidate the reaction mechanism, revealing how the enatiotopic-group-selective transmetalation of gem-diborylalkanes with chiral copper complex occurs to generate chiral α-borylalkyl-copper species for the first time. Additional synthetic applications to the synthesis of various chiral building blocks are also included.

Esters of 1,3-dimethyl-but-3-en-1-yl, their utilization as perfuming and flavoring ingredients and compositions containing same

Use of certain ester derivatives of 1,3-dimethyl-but-3-en-1-yl as perfuming and flavoring ingredients. These ester derivatives possess the following formula STR1 wherein symbol R represents a hydrogen atom, a saturated or an unsaturated, linear or branched lower alkyl having 1 to 6 carbon atoms, or an aryl radical. The compounds of formula (I) are new chemical entities.