Benzyl Barasa: Properties, Shiri, aikace-aikace

Aromatic alcohols - benzene homologues Kalam, a cikin m wanda da hydrogen zarra aka maye gurbinsu hydroxy. A halin yanzu, turare masana'antu ne sau da yawa sosai amfani benzyl barasa. Da dabara na fili wakilta m saura na da barasa da kuma benzene (phenyl) - S6N5SN2ON. Aromatic alcohols halin isomerism m gefen sarkar da kuma jeri kungiyar - OH a hydrocarbon sarkar. Barasa a yawancin lokuta, ba da maras muhimmanci sunan.

Benzyl barasa: hanyoyi na samun

Aromatic alcohols a free jihar da aka rarraba shi ko'ina a yanayi. Matsayin mai mulkin, suna gano a cikin muhimmanci mai. Benzyl barasa da aka hada daga halogenated benzene homologues, a cikin abin da halogen aka sarrafa a wani gefen sarkar. Wadannan alcohols bambanta daga phenols a sama da dukan domin ba su furta acidic Properties. Benzyl barasa ne ma samu daga halitta raw kayan, wanda ya ƙunshi esters. Sa'an nan, ta haka ne ya samu aka cirewa da aromatic alcohols. Aromatic alcohols ne sosai a kusa da aliphatic alcohols: da mataki na Alkali karfe alkoxides ta samar. da hadawan abu da iskar shaka, dangane da tsarin, shi ne tuba zuwa daidai aldehydes ko ketones. Abu ne mai sauki ga form ethers da esters.

Jiki Properties na alcohols

A farko wakilan da homologue jerin daga acyclic alcohols - ruwa, kuma mafi girma alcohols - daskararru. Da farko homologs (methanol, ethanol, propanol) da wari da barasa, matsakaici (isopropanol, butanol, isobutanol, pentanol, hexanol) - fusel mai, mafi girma - ba wari. Alcohols da wani babban tafasar batu, wanda ake dangantawa da kungiyar da kwayoyin ta hanyar hydrogen shaidu. Yawancin wadannan da sauran physico-sinadaran Properties na alcohols dabam tare da kara kwayoyin nauyi.

Ya kamata ya yi la'akari da cewa gwamnatin rikon kwarya barasa daga ruwa zuwa gaseous jihar (a ruwan) karya da hydrogen bond. A ultraviolet sha bakan akwai wata ƙungiya a yankin 150-200 nm. X-ray, kuma electron diffraction yiwu domin sanin kwana na da maras mike hada guda biyu C-C-N na 110 ° 25 '. Amma ga aromatic alcohols, to, suna da halin da guda Properties kamar cewa daga acyclic alcohols. Wadannan mahadi talauci ko ba narkewa a cikin ruwa, mai kyau - a cikin kwayoyin kaushi. Tafasar batu muhimmanci mafi girma fiye da daidai arene. A sha band a ultraviolet da infrared a jere kama aliphatic alcohols.

Chemical Properties na aromatic alcohols

Wadannan mahadi da wannan sinadaran Properties matsayin aliphatic alcohols. Sun samar da alkoxides, ethers da esters, halogenated a gefe sarkar, da kuma lokacin da hadawan abu da iskar shaka - ketones, aldehydes, kuma aromatic acid. Haka kuma, wadannan alcohols iya nuna kaddarorin arenes. Alal misali, suna iya amsa benzenovogo tsakiya - halogenation, nitration, sulfonation, kuma hydrogenation, da dai sauransu

Benzyl barasa - m, sosai narkewa a cikin ethanol, talauci - a ruwa, ya narke a 15,3 ° C, tafasa a 205,8 ° C. Tattalin ta alkaline hydrolysis na benzyl chloride ta maida martani benzaldehyde da formaldehyde a gaban sodium hydroxide, wasu da muhimmanci mai da na halitta balms. Amfani da kamshi, wari kulle, da sauran ƙarfi a cikin turare masana'antu.

Beta-phenylethyl barasa - m melts a 27 ° C da kuma tafasa a 222 ° C, mai narkewa a cikin ethanol. Kunshe a cikin ruwan hoda, albasa muhimmanci mai. Yana amfani da aromatic abu, wanda yana da wari na wardi. Har ila yau, wani abu amfani a cikin turare da kuma abinci masana'antu.

Cinnamic barasa - m melts a 33 ° C, readily mai narkewa a cikin ethanol. Yana dauke da yafi a cikin nau'i na ethers a muhimmanci mai, m resins, balsams. Aromatic abu da hyacinth wari da ake amfani a cikin turare masana'antu, da kuma yadda raw kayan for kira na mafi yawan odorous abubuwa.