Pyridine → HCID 70599963, compound

Participants

Reaction Steps

In accordance with the procedure of Example 1, 35.34g (0.15 moles) 5-(chloroformyloxypentyl)-1,3,4-dioxazol-2-one is made to react with 21.63g (0.15 moles) hydroxypropylmethacrylate (a 1:1 mixture of 2-hydroxypropyl and 1-methyl-2-hydroxyethylmethacrylate) in 75 ml 1,4-dioxane by adding 11.86g (0.15 moles) pyridine in 65 ml 1,4-dioxane over a 1 hour period at 18-21° C. After work-up, 50.0g of a slightly reddish-brown liquid is obtained which is analyzed by IR and NMR spectroscopy to be a 1:1 mixture of 5-[(2-methacryloyloxy-1-methylethyl)formyloxypentyl]-1,3,4-dioxazol-2-one and 5-[(2-methacryloyloxy-2-methylethyl)formyloxypentyl]-1,3,4-dioxazol-2-one (yield: 97.2%), having the respective structural formulas: ##STR17##

Provenance & Evidence