text: Synthesis of thiophenols from phenols can be performed using one of these reactions named for Newman and Kwart.
full_question: Synthesis of thiophenols from phenols can be performed using one of these reactions named for Newman and Kwart. Silyl ethers can be synthesized using one of these reactions named for Brook. This type of reaction is responsible for the "ring walk" in certain bicyclic compounds. Another example of this type of reaction involves the O-acylation of a hydroxamic acid followed by hydrolysis to produce a primary amine. This type of reaction produces an imine from a protonated hydrazone in the second step of the Fischer indole synthesis. The Lossen reaction is one of these reactions, as is the thermal decomposition of an acyl azide into an isocyanate via release of nitrogen gas. This type of reaction is exemplified by hydride shifts as well as a pericyclic isomerization of a 1,5-diene in a sigmatropic fashion. For 10 points, name these reactions which alter the carbon skeleton of a molecule, which include examples named for Curtius and Cope.
first_sentence: Synthesis of thiophenols from phenols can be performed using one of these reactions named for Newman and Kwart.
raw_answer: rearrangements