Growth regulator herbicides, esters

Table II. Vapor Pressure and Latent Heat of Vaporization of Esters of Growth Regulator Herbicides...

AIkyl-Ai,A/-diaLkyl-l-naphthalenecarboxamides are useful herbicides (86) and the 2,2-dimeth5lhydra2ide of 1-naphthalenecarboxyhc acid has been patented as a plant growth regulator (87). 2-Propynyl-2-naphthalenecarboxylate [53548-27-9] and similar esters are insecticides (88). 1-Naphthaleneacetic acid, the plant growth regulator, has been prepared from naphthalene, concentrated HCl, and paraformaldehyde without isolation of intermediate 1-chloromethylnaphthalene or l-naphthaleneacetonitnle (89). 

Phenanthrenequinone is used as a base material for the plant growth regulator flurenol-n-butyl ester, which is produced from phenanthrenequinone by ben-zilic add rearrangement to yield 9-hydroxyfluorene-9-carboxylic acid, and subsequent esterification with n-butanol. It is applied in mixtures with other herbicides, such as e.g. MCPA. 

---