470700-29-9

Upstream product

• 50-00-0 formaldehyd 
• 317842-43-6 N-(2,2-dimethoxyethyl)-4-methyl-N-(prop-2-yn-1-yl)benzenesulfonamide 
• 55022-46-3 4-methyl-N-prop-2-ynylbenzenesulfonamide 
• 98-59-9 p-toluenesulfonyl chloride 
• 58754-95-3 N-(2,2-dimethoxyethyl)-p-toluenesulfonamide 

Downstream Products

• 420132-18-9 N-(buta-2,3-dien-1-yl)-4-methyl-N-(2-oxoethyl)benzenesulfonamide 

Relevant academic research and scientific papers

Synthesis of α-methylene-γ-butyrolactones: Ru-catalyzed cyclocarbonylation of allenyl aldehydes and allenyl ketones

An efficient route to α-methylene-γ-lactones involves the Ru-catalyzed [2+2+1] cycloadditions of allenyl aldehydes and ketones with CO (see scheme; n = 1, 2; R = H, CH3; X = NTs, O, C(CO2Et)2; Ts = toluene-4-sulfonyl). The

Copper-catalyzed cycloisomerization of unactivated allene-tethered O-propargyl oximes: A domino reaction sequence toward the synthesis of hexahydropyrrolo[3,4- b]azepin-5(4 H)-ones

A novel copper-catalyzed cycloisomerization of unactivated allene-tethered O-propargyl oximes has been developed for the synthesis of hexahydropyrrolo[3,4-b]azepin-5(4H)-ones. This one-pot domino reaction proceeds via a [2,3]-sigmatropic rearrangement, a