NOVEL BIS—(N—ALKYL—N,N—DIMETHYL AMMONIUM)POLYETHYLENEGLYCOL ETHER SALIS AS PHASE TRANSFER CATALYSTS IN THE CONDENSATION OF 1,4—DIACETYL—2,5—PIPERAZINEDIONE AND ALDEHYDES
NOVEL BIS—(N—ALKYL—N,N—DIMETHYL AMMONIUM)POLYETHYLENEGLYCOL ETHER SALIS AS PHASE TRANSFER CATALYSTS IN THE CONDENSATION OF 1,4—DIACETYL—2,5—PIPERAZINEDIONE AND ALDEHYDES
摘要
Five novel bis—(N—alkyl—N,N—dimethyl ammoni(?)n)polyethyleneglyool ether salts prepared by our previously reported proced(?)e show high catalytic efficiency in the condensation of 1,4—diacetyl— 2,5—piperazinedione and aldehydes at both higher and lower temperature even in lower concentration.They al so show catalytic selectivity at lower temperature.
Five novel bis—(N—alkyl—N,N—dimethyl ammoni(?)n)polyethyleneglyool ether salts prepared by our previously reported proced(?)e show high catalytic efficiency in the condensation of 1,4—diacetyl— 2,5—piperazinedione and aldehydes at both higher and lower temperature even in lower concentration.They al so show catalytic selectivity at lower temperature.
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