3 6-Dihydro-2H-pyran-4-boronic acid pinacol ester (CAS# 287944-16-5)
| Awọn aami ewu | Xn – ipalara |
| Awọn koodu ewu | 22 – Ipalara ti o ba gbe |
| Apejuwe Abo | S20 - Nigbati o ba nlo, maṣe jẹ tabi mu. S35 - Ohun elo yii ati apoti rẹ gbọdọ wa ni sisọnu ni ọna ailewu. |
| WGK Germany | 3 |
| HS koodu | 29349990 |
Ọrọ Iṣaaju
3. acid pinacol ester jẹ ohun elo Organic pẹlu ilana kemikali ti C12H19BO3 ati iwuwo molikula ti 214.09g/mol.
Iseda:
-Irisi: Omi ti ko ni awọ tabi ri to
-Ogo Iyọ:-43 ~-41 ℃
-Akoko farabale: 135-137 ℃
-iwuwo: 1,05 g/ml
-Solubility: Soluble ni awọn olomi-ara ti o wọpọ gẹgẹbi dimethylformamide, dichloromethane, methanol ati ethanol.
Lo:
- 3, acid pinacol ester jẹ ọkan ninu awọn agbedemeji pataki ni iṣelọpọ Organic. O le ṣee lo bi reagent fun ikole ti awọn iwe ifowopamosi C-O ati C-C, ati pe a lo nigbagbogbo bi ayase fun awọn aati idapọmọra C-C gẹgẹ bi iṣe Suzuki ati ifesi Stille.
-Akopọ tun le ṣee lo lati ṣeto awọn ẹgbẹ iṣẹ-ṣiṣe miiran tabi awọn agbo ogun, gẹgẹbi awọn aldehydes, ketones ati acids.
Ọna:
- 3, acid pinacol ester ni gbogbo igba pese sile nipa didaṣe Pyran pẹlu boronic acid pinacol labẹ alkali catalysis. Ọna igbaradi pato le ṣee yan gẹgẹbi awọn ibeere gangan, ati ọna igbaradi ti o wọpọ pẹlu lilo iṣuu soda borate ati pinacol lati fesi labẹ awọn ipo ipilẹ.
Alaye Abo:
3, acid pinacol ester le jẹ ipalara si ilera ati ayika. Lilo yẹ ki o tẹle awọn ilana yàrá ti o tọ ati ni ipese pẹlu ohun elo aabo ti ara ẹni pataki, gẹgẹbi awọn ibọwọ yàrá ati aabo oju.
Ni afikun, alaye aabo kan pato ati awọn ilana ṣiṣe yẹ ki o tọka si iwe data aabo ti agbo (SDS) tabi itọkasi kemikali igbẹkẹle miiran.
