Lead acetate Menthol

Incompat Phenol coagulates collodion liquefies or becomes semiliquid when triturated with acetanilide, butyl-chloral hydrate, camphor, monobromated camphor, chloral hydrate, diuretin, lead acetate, menthol, naphthalene, naph -thol, acetophenetidin, pyrogallol, resorcinol, salol, sodium phosphate, thymol, urethane, chloralamide, terpin hydrate. 

A comparison between single and double induction in the photochemical [2 + 2] cycloadditions of 3-oxo-l-cyclohexen-l-carboxylates with the ketene acetals was investigated89 90. Single induction using (-)-menthol as chiral auxiliary [R1 or R2 = (-)-menthyl] gave low selectivities only. A combination of these single inductions [R1 = R2 = (-)-menthyl] leads to the intermediacy of a matched reaction pair which gave an increased diastereoselectivity (d.r. 27.5 72.5) whereas a mismatched" reaction pair [R1 = ( + )-menthyl, R2 = (-)-menthyl] resulted in a decrease (d.r. 41.5 58.5). A more pronounced contrast in double induction results when the two chiral auxiliaries arc not equivalent [R1 = (—)-8-phenylmenthyl, R2 = (—)-menthyl]. 

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