different between electrocyclic vs disrotatory

English

electro- +? cyclic

electrocyclic (not comparable)

(organic chemistry) Describing a molecular rearrangement in which a covalent single bond is formed between the ends of a fully conjugated system resulting in a cyclic compound with one fewer double bonds

dis- +? rotatory

disrotatory (not comparable)

(organic chemistry) Describing an electrocyclic reaction in which the substituents at the interacting termini of the conjugated system rotate in opposite senses

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