Diazomethane reacts rapidly with Smith’s diene to produce pyrazoline (R = H) by exclusive reaction at the cyclobutene π-bond); diazoethane and 2-diazopropane produce analogous products

If the sample does not disperse during the shaking process, sonify the mixture in an ultrasonic bath for 30 min.

Instead she played, largely impeccably, the part of a modern constitutional monarch, a symbolic figurehead with a right to be consulted and to advise and warn political leaders privately and to show herself publicly as a focus of national life, celebration and commemoration.

The noise in this room was perfectly tumultuous, for there were more children there, than Scrooge in his agitated state of mind could count; and, unlike the celebrated herd in the poem, they were not forty children conducting themselves like one, but every child was conducting itself like forty.