By Larry E. Overman
Natural Reactions is a suite of chapters, each one dedicated to a unmarried response or a definitive section of a response of extensive applicability, with specific consciousness given to barriers, interfering impacts, results of constitution, and the choice of experimental techniques.Volume 70 contains chapters, the 1st takes a glance on the Catalytic uneven Strecker response, the second one on the Synthesis of Phenols and Quinones through Fischer Carbene Complexes.Includes tables that comprise all attainable examples of the reactions below considerationEach response is absolutely referenced to the first literature
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Additional resources for Organic Reactions, Volume 70
01 mmol) was added and the mixture stirred at room temperature for 1 hour. 0 mmol) were added successively. After the reaction was completed, water was added. The products were extracted three times with CH2 Cl2 . The organic phase was washed with brine, dried over Na2 SO4 and concentrated under vacuum. 2285. 5 mL). 02 mmol) was added and the reaction mixture was stirred at room temperature for 1 hour. 0 mmol) were added successively. After the reaction was completed, water was added. The products were extracted three times with CH2 Cl2 .
25 eq) R = alkyl Ph (76-92%) 85-99% ee dr = 97:3 to >98:2 Ar K2CO3, MeOH R O O OMe NH2 110 (100%) O NH HN N N 109 (Eq. 50) An asymmetric allylic substitution by zinc enolates (such as 111) derived from N-protected glycine esters catalyzed by a chiral palladium complex and ligand 112 has been reported (Eq. 51). 2 mol%) OBu-t 112 (3 mol%), THF CF3CONH CO2Bu-t Ph Ph (62%) 94% ee dr = 95:5 111 O N PPh2 112 (Eq. 51) Catalytic Asymmetric Addition to Imino Esters. g. the Mannich-type reactions) using diverse nucleophiles.
5 mL), benzoyl chloride (20 µL), and 4-N ,N -dimethylaminopyridine (DMAP, 5 mg) were added at room temperature. After stirring for 1 hour, the reaction mixture was poured into saturated aqueous NH4 Cl (5 mL). The products were extracted with EtOAc (2 × 5 mL). The combined organic layers were washed with brine (5 mL), dried (Na2 SO4 ), and concentrated. Purification by silica gel preparative TLC (EtOAc/hexane = 1 : 4) gave the oxazoline in 98% ee. 0. 5 eq) NC O H N PPh2 EtCN, –40° Cl Cl O 1. conc.