Patent ID: 6627580
Filing Date: 2003-09-30
Classification: C07C

Abstract:
A process to remedy manganese deficiency in plant cultivation which comprises applying to the soil holding the plant a chelate of the following formula: wherein: n=2-4wherebyat least two of X are of formula III Y=COOH, â€”PO3H2 or o-hydroxyphenyl R1, R2 and R3 are independently H or C1-C8 alkyls m=1, 2 or 3 and most preferably m=1 Z and Zâ€² are unsubstituted or substituted C C*=C or CH or N Z1, Z2, Zâ€²1 and Zâ€²2 are independently selected from H (or nothing for Z2 and Zâ€²2 if C* is N) and C1-C10 groups that optionally contain one or more N atoms (optionally attached directly to C*), whereby one of the pairs Z/Z1, Z/Z2 and Z1/Z2 and one of the pairs Zâ€²/Zâ€²1, Zâ€²/Zâ€²2 and Zâ€²1/Zâ€²2 may be connected to form substituted or unsubstituted (hetero) (poly) cyclic structures of less than 20 atoms C* is either part of an aromatic (hetero) (poly)cyclic structure or linked by a double bond to Z or Z2 and/or Zâ€² or Zâ€²2, with the proviso that X is ethylene.