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8-(5-bromopyridin-2-yl)-1,4-dioxaspiro[4.5]decan-8-ol synthesis

2synthesis methods
-

Yield:708274-37-7 79%

Reaction Conditions:

Stage #1: 2,5-dibromopyridinewith n-butyllithium in toluene at -78; for 2.5 h;
Stage #2: cyclohexanedione monoethylene ketal in dichloromethane;toluene at -78 - 20;

References:

Xue, Chu-Biao;Wang, Anlai;Han, Qi;Zhang, Yingxin;Cao, Ganfeng;Feng, Hao;Huang, Taisheng;Zheng, Changsheng;Xia, Michael;Zhang, Ke;Kong, Lingquan;Glenn, Joseph;Anand, Rajan;Meloni, David;Robinson;Shao, Lixin;Storace, Lou;Li, Mei;Hughes, Robert O.;Devraj, Rajesh;Morton, Philip A.;Rogier, D. Joseph;Covington, Maryanne;Scherle, Peggy;Diamond, Sharon;Emm, Tom;Yeleswaram, Swamy;Contel, Nancy;Vaddi, Kris;Newton, Robert;Hollis, Greg;Metcalf, Brian [ACS Medicinal Chemistry Letters,2011,vol. 2,# 12,p. 913 - 918] Location in patent:supporting information; experimental part