| 单词 | quinone methide |
| 释义 | > as lemmasquinone methide 2. More fully quinone methide. A quinone derivative with a methylene group in place of one of the oxygen atoms. ΚΠ 1951 C. A. Redfarn in H. M. Langton Synthetic Resins & Allied Plastics (ed. 3) iii. 136 K. Hultzsch has suggested the theory that when the ether linked compounds are heated above 160°C. they break down to give ortho- and para- quinone methides and their polymers. 1958 N. J. L. Megson Phenolic Resin Chem. iii. 64 The production of quinone methides is of importance to the mechanism of resole formation; but..the methides from para alcohols appear, in general, to form dimers. 1981 Jrnl. Amer. Chem. Soc. 103 5250/2 Described herein are the syntheses of nitrogen-containing polycycles based on this methodology for the generation of N-substituted o-quinone methide imine. 1998 Biochem. Jrnl. 332 367/1 Inactivation proceeds via a quinone methide intermediate formed by the fragmentation of the aglycone of salicortin while it is bound to the enzyme. < as lemmas |
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