321.1 - The compound CH2=C=CO yog lub npe ketene. Derivatives ntawm ketene muaj npe los ntawm kev hloov pauv nomenclature. Nco tseg: "Bis" yog siv los zam qhov tsis meej pem, vim qee zaum diketene yog siv rau dimeric ketene.
Ketene hauv chemistry yog dab tsi?
A ketene yog an organic compound ntawm daim ntawv R′R″C=C=O, qhov twg R thiab R' yog ob pawg tshuaj monovalent arbitrary (los yog ob qho kev hloov pauv. cov chaw hauv tib lub molecule). Lub npe kuj tseem tuaj yeem xa mus rau cov ntsiab lus tshwj xeeb ethenone H. 2C=C=O, qhov yooj yim tshaj plaws ketene.
Tus qauv ntawm ketene yog dab tsi?
ketene, ib chav kawm ntawm cov organic tebchaw uas muaj cov functional grouping C=C=O ; Cov tswv cuab tseem ceeb tshaj plaws hauv chav kawm yog ketene nws tus kheej, CH2=C=O, uas yog siv rau hauv kev tsim cov acetic anhydride thiab lwm yam kev lag luam organic tshuaj.
Ketene ua li cas?
Ketene yog npaj los ntawm pyrolyzing acetone, acetic acid, lossis acetic anhydride lossis los ntawm kev kho acetyl chloride nrog cov nonprotic nucleophile. Nws yog ib qho tseem ceeb rau acetylates nucleophiles los ua esters, amides, thiab lwm cov tebchaw uas tsis tuaj yeem ua tau yooj yim nrog lwm cov tshuaj reagents.
Vim li cas ketene toxic?
Ketene yog cov tshuaj lom ua pa uas tuaj yeem nthuav tawm qeeb toxicity rau cov txheej txheem alveolar (feem ntau capillaries) ua rau tuag los ntawm pulmonary edema. … Zoo li phosgene, cov teebmeem pulmonary ntawm kev nqus tau rau ketene tuaj yeem tshwm sim thaum tsis muaj qhov ncaj qhakhaus los ntawm ketene los yog nws cov khoom tawg, acetic acid.