3 6-Dihydro-2H-pyran-4-boronic acid pinacol ester (CAS# 287944-16-5)
| Alamomin haɗari | Xn - cutarwa |
| Lambobin haɗari | 22- Mai cutarwa idan an hadiye shi |
| Bayanin Tsaro | S20 - Lokacin amfani, kar a ci ko sha. S35 - Dole ne a zubar da wannan abu da kwandonsa a hanya mai aminci. |
| WGK Jamus | 3 |
| HS Code | 2934990 |
Gabatarwa
3. acid pinacol ester wani fili ne na kwayoyin halitta tare da tsarin sinadarai na C12H19BO3 da nauyin kwayoyin 214.09g / mol.
Hali:
-Bayyanuwa: ruwa mara launi ko m
-Mai narkewa:-43 ~-41 ℃
-Tafasa: 135-137 ℃
- Yawan: 1.05 g/ml
-Solubility: Mai narkewa a cikin abubuwan kaushi na gama gari kamar dimethylformamide, dichloromethane, methanol da ethanol.
Amfani:
- 3, acid pinacol ester yana daya daga cikin mahimman tsaka-tsaki a cikin haɗin kwayoyin halitta. Ana iya amfani da shi azaman reagent don gina haɗin C-O da C-C, kuma galibi ana amfani dashi azaman mai kara kuzari ga halayen haɗin gwiwar C-C kamar su Suzuki da motsin Stille.
- Hakanan za'a iya amfani da fili don shirya wasu ƙungiyoyi masu aiki ko mahadi, kamar aldehydes, ketones da acid.
Hanya:
- 3, acid pinacol ester gabaɗaya an shirya shi ta hanyar amsa Pyran tare da boronic acid pinacol ƙarƙashin alkali catalysis. Za'a iya zaɓar takamaiman hanyar shirye-shiryen bisa ga ainihin buƙatun, kuma hanyar shiri na yau da kullun ta haɗa da amfani da sodium borate da pinacol don amsawa a ƙarƙashin yanayin alkaline.
Bayanin Tsaro:
3, acid pinacol ester na iya zama cutarwa ga lafiya da muhalli. Amfani ya kamata ya bi hanyoyin dakin gwaje-gwaje masu dacewa kuma a sanye shi da mahimman kayan kariya na mutum, kamar safofin hannu na dakin gwaje-gwaje da kariyar ido.
Bugu da kari, takamaiman bayanin aminci da umarnin aiki yakamata su koma ga takaddun bayanan aminci na fili (SDS) ko wasu amintattun bayanan sinadarai.
