C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/294, 260/322
C07D 223/06 (2006.01) B65B 9/08 (2006.01) B65B 43/26 (2006.01) C07D 207/02 (2006.01) C07D 207/22 (2006.01) C07D 211/08 (2006.01) C07D 211/78 (2006.01) C07D 223/04 (2006.01) E21B 3/00 (2006.01)
Patent
CA 1042430
Abstract of the Disclosure A compound of the formula Image (I) or a salt thereof, or of the formula Image (Ia) or a salt thereof, wherein R1 and R2 are the same or different and each is hydrogen. lower alkyl, cycloalkyl of 4 to 7 carbon atoms, aryl of 6 to 14 carbon atoms, or aralkyl of up to 18 carbon atoms wherein the alkyl moiety contains up to 6 carbon atoms; and n is 3, 4, or 5; -1- is produced by hydrolyzing a compound of the formula Image (II) wherein R1, R2 and n are as above defined, and X is halogen; a compound of the formula Image (III), or a hydrohalide thereof, wherein R1, R2, n and X are as above defined; or a compound of the formula Image (IV), wherein R1, R2, n and X are as above defined; in the presence of a base at a temperature of from about 20°C to about 180°C. -2- The compounds produced are valuable interme- diates from which cyclic amino acids and .alpha.,.omega.-diamino- carboxylic acids are obtained. -3-
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