Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 2,3,5-Trichloropyridin-4-ol, is researched, Molecular C5H2Cl3NO, CAS is 1970-40-7, about Ultrastructural change of tobacco chloroplasts induced by pyriclor.Application In Synthesis of 2,3,5-Trichloropyridin-4-ol.
Treatment of tobacco (Nicotiana tabacum, var NC-402) with 2,3,5-trichloro-4-pyridinol (pyriclor) leads to progressive disruption of chloroplast ultrastructure. Initial changes include the inception of a spherical form, swelling of the fret system, and commencement of loss of starch. More advanced changes include the complete disappearance of starch, further swelling and disorganization of the fret membrane system, followed by swelling and disruption of the membranes of the granal disks and rupture of the chloroplast envelope. The changes induced by pyriclor on chloroplast ultrastructure in tobacco are analogous to those caused by atrazine on kidney bean (Phaseolus vulgaris) and barnyard grass (Echinochloa crusgalli). The shape and size of mitochondria were not altered by the treatment; however, there appeared to be a significant increase in the number of mitochondria present when alterations in chloroplast structure could be seen. The appearance of visual symptoms of phytotoxicity (chlorosis) correlated with the onset of disruptive changes in chloroplast ultrastructure.
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Reference:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem