ylidn.

/ˈɪlɪd/

Forms: Also ylide /-aɪd/.

Etymology: < German ylid (Wittig & Felletschin 1944, in Ann. d. Chem. DLV. 133): see -yl suffix, -ide suffix.

Chemistry.

Any neutral compound containing a negatively charged carbon atom directly bonded to a positively charged atom of another element (commonly sulphur, phosphorus, or nitrogen).

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic compounds > [noun] > by constituent molecules

acetylide1863

oxime1883

osone1889

oximide1893

organoalkali1932

ylid1951

phenolic1956

organo-borane1957

plastoquinone1958

nitrene1960

tetrahedrane1964

1951 Chem. Abstr. 45 6166 The reaction of PhLi upon suitable quaternary ammonium salts results in compds. with a semipolar bond between N and adjacent C. These compds. are called ylides.

1972 S. J. Weininger Contemp. Org. Chem. xviii. 491 Ylids are extremely useful reactive intermediates for syntheses and are the subject of a good deal of research effort at the present time.

1979 Nature 15 Nov. 231/3 The zwitterionic ylides were obtained from the reaction of phenyl-lithium with quaternary ammonium halides.

Derivatives

yˈlidic adj.

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic compounds > [adjective] > by constituent molecules

triethylic1866

organochlorine1961

phosphazene1961

ylidic1970

1970 Nature 25 July 335/2 Silylated ylides of phosphorus, arsenic and sulphur, in which the silyl group is both a stabilizing and an efficient leaving group, transferring the ylidic moiety in very mild conditions.

1982 Heterocycles XIX. 1849 Cycloimmonium ylides..possessing two electron~withdrawing groups covalently bonded to the ylidic carbon..can be isolated.

This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020).

单词	ylid
释义	ylidn. /ˈɪlɪd/ Forms: Also ylide /-aɪd/. Etymology: < German ylid (Wittig & Felletschin 1944, in Ann. d. Chem. DLV. 133): see -yl suffix, -ide suffix. Chemistry. Any neutral compound containing a negatively charged carbon atom directly bonded to a positively charged atom of another element (commonly sulphur, phosphorus, or nitrogen). ΘΚΠ the world > matter > chemistry > organic chemistry > organic compounds > [noun] > by constituent molecules acetylide1863 oxime1883 osone1889 oximide1893 organoalkali1932 ylid1951 phenolic1956 organo-borane1957 plastoquinone1958 nitrene1960 tetrahedrane1964 1951 Chem. Abstr. 45 6166 The reaction of PhLi upon suitable quaternary ammonium salts results in compds. with a semipolar bond between N and adjacent C. These compds. are called ylides. 1972 S. J. Weininger Contemp. Org. Chem. xviii. 491 Ylids are extremely useful reactive intermediates for syntheses and are the subject of a good deal of research effort at the present time. 1979 Nature 15 Nov. 231/3 The zwitterionic ylides were obtained from the reaction of phenyl-lithium with quaternary ammonium halides. Derivatives yˈlidic adj. ΘΚΠ the world > matter > chemistry > organic chemistry > organic compounds > [adjective] > by constituent molecules triethylic1866 organochlorine1961 phosphazene1961 ylidic1970 1970 Nature 25 July 335/2 Silylated ylides of phosphorus, arsenic and sulphur, in which the silyl group is both a stabilizing and an efficient leaving group, transferring the ylidic moiety in very mild conditions. 1982 Heterocycles XIX. 1849 Cycloimmonium ylides..possessing two electron~withdrawing groups covalently bonded to the ylidic carbon..can be isolated. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2020). < n.1951
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