PMID- 16209582 OWN - NLM STAT- MEDLINE DCOM- 20060628 LR - 20051007 IS - 0022-3263 (Print) IS - 0022-3263 (Linking) VI - 70 IP - 21 DP - 2005 Oct 14 TI - Stereoselective formation of carbon-carbon bonds via SN2-displacement: synthesis of substituted cycloalkyl[b]indoles. PG - 8385-94 AB - A general asymmetric synthesis of substituted cycloalkyl[b]indoles has been accomplished. The key features of this approach are (1) the utilization of a Japp-Klingemann condensation/Fischer cyclization to prepare cycloalkyl[b]indolones, (2) the asymmetric borane reduction of these heterocyclic ketones with (S)-OAB to obtain enantiomerically pure alcohols, and (3) the stereoselective S(N)2-displacement of these indole alcohol substrates with a carbon nucleophile under Mitsunobu conditions to set the C1 or C3 tertiary carbon stereocenter. The use of trimethylphosphine (PMe3) and bis(2,2,2-trichloroethyl) azodicarboxylate (TCEAD) was found to have an effect on the Mitsunobu dehydrative alkylation. FAU - Hillier, Michael C AU - Hillier MC AD - Department of Process Research, Merck and Company, P.O. Box 2000, Rahway, New Jersey 07065, USA. michael_hillier@merck.com FAU - Marcoux, Jean-Francois AU - Marcoux JF FAU - Zhao, Dalian AU - Zhao D FAU - Grabowski, Edward J J AU - Grabowski EJ FAU - McKeown, Arlene E AU - McKeown AE FAU - Tillyer, Richard D AU - Tillyer RD LA - eng PT - Journal Article PL - United States TA - J Org Chem JT - The Journal of organic chemistry JID - 2985193R RN - 0 (Indoles) RN - 7440-44-0 (Carbon) SB - IM MH - Carbon/*chemistry MH - Cyclization MH - Indoles/*chemical synthesis/chemistry MH - Molecular Structure MH - Stereoisomerism EDAT- 2005/10/08 09:00 MHDA- 2006/06/29 09:00 CRDT- 2005/10/08 09:00 PHST- 2005/10/08 09:00 [pubmed] PHST- 2006/06/29 09:00 [medline] PHST- 2005/10/08 09:00 [entrez] AID - 10.1021/jo051146p [doi] PST - ppublish SO - J Org Chem. 2005 Oct 14;70(21):8385-94. doi: 10.1021/jo051146p.