BOC-N-Methyl-L-alanine (CAS# 16948-16-6)
Ngozi ndi Chitetezo
| Kufotokozera Zachitetezo | 24/25 - Pewani kukhudzana ndi khungu ndi maso. |
| WGK Germany | 3 |
| HS kodi | 2924 19 00 |
| Kalasi Yowopsa | ZOKWIYA |
BOC-N-Methyl-L-alanine (CAS# 16948-16-6) Zambiri
| ntchito | BOC-N-methyl-L-alanine angagwiritsidwe ntchito osati kupanga mapuloteni kaphatikizidwe, komanso monga kukoma enhancer, preservative ndi preservative m'munda chakudya, monga mankhwala zopangira mankhwala m'munda ndi wofatsa surfactant kaphatikizidwe m'munda mankhwala tsiku lililonse. |
| kukonzekera | tetrahydrofuran (80 mL) yankho la 1-boc-alanine (5g, 26.4 mmol) linawonjezeredwa, ufa wabwino KOH (10.4g, 187) mmol) anawonjezedwa pa 0 ℃, ndiyeno tetrabutylammonium bisulfate (0.5g, 10% ndi kulemera) anawonjezeredwa. Kenako, dimethyl sulfate (10 mL, 105 mmol) adawonjezedwa pang'onopang'ono kwa mphindi zopitilira 15. Onetsetsani kwa mphindi 30 ndikuwonjezera madzi (50 ml). Pambuyo poyambitsa kutentha kwa maola asanu, 20% ammonium hydroxide aqueous solution (20 ml) anawonjezeredwa. Chepetsani zomwe zimachitika ndi ether (100 mL), alekanitse madzi osanjikiza, ndikuchotsani organic wosanjikiza ndi saturated NaHCO3 aqueous solution (2 × 40 mL). Madzi osakanikirana adapangidwa acidified ndi 1M KHSO4 mpaka pH 1 ndikuchotsedwa ndi ethyl acetate (2 × 200 mL). Zigawo za organic zimaphatikizidwa, zouma (Na2SO4), zosefedwa komanso zokhazikika. Zotsatira zake zidadziwika kuti BOC-N-methyl-L-alanine. Butter, zokolola 4.3g, 80%. |
Lembani uthenga wanu apa ndikutumiza kwa ife
