(organic chemistry) A rearrangement name reaction in which an organosilyl group switches position with a hydroxyl proton over a carbon-to-oxygen covalent bond under the influence of a base, yielding a silyl ether.

Third-person singular simple present indicative form of rearrange the deck chairs on the Titanic

A photochemical reaction of a molecular entity comprising two p-systems, separated by a saturated carbon atom (a 1,4-diene or an allyl-substituted aromatic analog), to form an ene- (or aryl-) substituted cyclopropane. The rearrangement formally amounts to a 1,2 shift of one ene group (in the diene) or the aryl group (in the allyl-aromatic analog) and ‘bond formation’ between the lateral carbons of the non-migrating moiety.

A rearrangement reaction in which a primary or secondary organic peroxide is converted to the corresponding ketone and alcohol under base catalysis; used as a tool in organic synthesis and in the biosynthesis of prostaglandins.

(informal, figuratively) To punch someone in the face.

plural of di-pimethane rearrangement

(idiomatic) To do something pointless or insignificant that will soon be overtaken by events, or that contributes nothing to the solution of a current problem.

present participle of rearrange the deck chairs on the Titanic

simple past tense and past participle of rearrange the deck chairs on the Titanic