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3-Quinuclidinol acts as a chiral building block for various antimuscarinic agents and other active pharmaceutical ingredients. It serves as a catalyst for condensation of methyl vinyl ketone with aldehydes. It is also used as a reagent for cleavage of beta-keto and vinylogous beta-keto esters. Further, it plays an important role as a synthon in the preparation of cholinergic receptor ligands and anesthetics. In addition to this, it is used in chemoselective alfa-iodination of acrylic esters through Morita-Baylis-Hillman reaction.
Reagent for selective cleavage of ß-keto esters to ketones in high yield: Synth. Commun., 5, 341 (1975). Geminal diesters are converted to monoesters in high yield under similar conditions: J. Org. Chem., 41, 208 (1976).
Superior catalyst for the Baylis-Hillman reaction: the addition of acrylic esters to aldehydes, often very slow (4-7 days) with the usual catalyst 1,4-Diazabicyclo[2.2.2]octane, A14003, is much faster (<1 day) in the presence of quinuclidinol: Synth. Commun., 18, 495 (1988); Tetrahedron Lett., 32, 5611 (1991). For more recent discussion and methodology, see: J. Org. Chem., 67, 510 (2002); 68, 692 (2003). For reviews of the Baylis-Hillman reaction, see: Tetrahedron, 44, 4653 (1988); 52, 8001 (1996). The rate of addition of enones to aldehydes is similarly enhanced: Synth. Commun., 18, 495 (1988); 19, 959 (1989).
Tanokura, M.; Miyakawa, T.; Guan, L.; Hou, F. Structural analysis of enzymes used for bioindustry and bioremediation. Biosci. Biotechnol., Biochem. 2015, 79 (9), 1391-1401.
Kim, H. Y.; Shieh, W. C.; Prashad, M. 3-Quinuclidinol as a nucleophilic catalyst for the cyanation of 2-chloropyrimidines. Tetrahedron Lett. 2014, 55 (36), 5055-5057.
Dichiarazioni di rischio (UE): H314-H318
Causes severe skin burns and eye damage. Causes serious eye damage.
Dichiarazioni precauzionali: P260u-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a
IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.