Cyclization occurs readily with dilute alkali . 遇到稀堿就容易環(huán)化。
Cyclization of olefines 烯烴環(huán)化
Crude oil cyclization 原油環(huán)化
Synthesis of benzimidazoles from o - nitroanilines in a one - step reductive cyclization process 鄰硝基苯胺還原關(guān)環(huán)一步法合成苯并咪唑類化合物
Using bf3 - et2o as a catalyst , the title compound was synthesized from allyl alcohol and epichlorohydrin by a series reaction included addition and cyclization 烯丙醇和環(huán)氧氯丙烷在三氟化硼乙醚絡(luò)合物的催化作用下進(jìn)行加成和環(huán)化反應(yīng)制得標(biāo)題化合物。
Using bf3 - et2o as a catalyst , the title compound was synthesized from allyl alcohol and epichlorohydrin by a series reaction included addition and cyclization 摘要烯丙醇和環(huán)氧氯丙烷在三氟化硼乙醚絡(luò)合物的催化作用下進(jìn)行加成和環(huán)化反應(yīng)制得標(biāo)題化合物。
Diazaspiro [ 4 . 4 ] nonane was synthesized from malononitrile as the starting material by a series of nucleleophilic displacement , hydrolytic cyclization and carbonyl reduction 摘要以丙二腈為原料,經(jīng)過親核取代、水解環(huán)合、羰基還原系列反應(yīng),合成了2 , 7 -二氮螺[ 4 . 4 ]壬烷。
The natural product ( ) - dihydroactinidiolide was synthesized from citral via following steps : cyclization , cyanation , hydrolysis - cycization and dehydration in 40 . 24 % total yield 摘要以檸檬醛為原料,經(jīng)環(huán)化、羥腈化、水解關(guān)環(huán)和脫水4步反應(yīng),以40 . 24 %的總產(chǎn)率合成了( ) -氫獼猴桃內(nèi)酯。
Methods pinocembrin and its derivatives were synthesized with 2 , 4 , 6 - trihydroxy - phenylethanone as the starting material via four steps including protection of the hydroxy - group , condensation , cyclization and deprotection 方法以2 , 4 , 6 -三羥基苯乙酮為起始原料,經(jīng)羥基保護(hù)、縮合、環(huán)化、脫保護(hù)合成目標(biāo)化合物。
In order to reduce time in this procedure , we realize a fast cyclization algorithm based on the hash table . experimental results show that this approach is efficient and automated in test vector translation 實(shí)驗(yàn)結(jié)果表明,在此波形格式基礎(chǔ)上的測試向量轉(zhuǎn)換,不僅在速度上得到提高,同時(shí)針對大容量的測試向量集合,也能獲得較高的壓縮結(jié)果。