907195-95-3

Upstream product

• 2859-78-1 4-Bromoveratrole 
• 17345-77-6 1-bromo-3,4-dihydroxybenzene 
• 907195-93-1 ethyl 4-(3,4-di-tert-butyldimethylsilyloxyphenyl)-4-pentenoate 
• 907195-92-0 (3,4-bis((tert-butyldimethylsilyl)oxy)phenyl)boronic acid 
• 1108192-19-3 ((4-bromo-1,2-phenylene)bis(oxy))bis(tert-butyldimethylsilane) 
• 907195-94-2 5-(3,4-di-tert-butyldimethylsilyloxyphenyl)-1-(2,4,6-trimethylphenylsulfonyl)-5-hexen-2-one 

Relevant academic research and scientific papers

Asymmetric catalysis of intramolecular cyclopropanation of 5-aryl-1-diazo-1-mesitylsulfonyl-5-hexen-2-ones

We have examined the catalytic asymmetric intramolecular cyclopropanation (IMCP) reactions of 5-aryl-1-diazo-1-mesitylsulfonyl-5-hexen-2-ones, and found that the substituent of the 5-aryl group dramatically changes the enantioselectivity. That is, no enantioselectivity was observed when the substituent was a methoxy group; however, enantioselectivity was moderate when the substituent was a methylenedioxy group or a tert-butyldimethylsilyloxy group, and it dramatically increased when the substituent was lacking (96% ee) or a benzoyloxy group (93% ee).