757191-69-8

Upstream product

• 353248-34-7 4-phenyl-1-(toluene-4-sulfonyl)-piperidin-2-one 
• 675-20-7 piperidin-2-one 
• 98-59-9 p-toluenesulfonyl chloride 
• 96013-55-7 1-[(4-methylphenyl)sulfonyl]-5,6-dihydro-1H-piperidin-2-one 
• 23438-61-1 1-(toluene-4-sulfonyl)piperidin-2-one 
• 456-64-4 phenyl trifluoromethanesulfonamide 

Relevant academic research and scientific papers

Synthesis of functionalized 1-azaspirocyclic cyclopentanones using bronsted acid or N-bromosuccinimide promoted ring expansions

Azaspirocyclic ring systems are present in a variety of alkaloids. Functionalized 1-azaspirocyclopentanones (6, 7, 11, 12) can be efficiently constructed through semipinacol ring expansion reactions of 2-(1- hydroxycyclobutyl)-p-toluenesulfonylenamides (4

Construction of Azaspirocyclic Ketones through α-Hydroxyiminium Ion or α-Siloxy Epoxide Semipinacol Rearrangements

(matrix presented) method 1: R,R1=H, n=1 method 2: R=TMS, R1=OH, n=2 Semipinacol-type rearrangements to produce azaspirocyclic ketones are presented. The yields and stereoselectivities of these reactions range from 67-94% yield and 2