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Thiazolethiones 19c, 19f, and 19k were prepared as racemates and unit cells were found to contain 1:1 mixtures of rotarners having (M) and (P) configuration at the N-O axis. Thus, (M) rotamers were arbitrarily chosen for the ellipsoid graphics in Figure 2. For 1-phenylpentenyl ester 19c, only (M/R) and (P/S) diastereomers were observed in the solid state. For stereochemical assignments along stereogenic axes, see: V. Prelog, G. Helmchen, Angew. Chem. 1982, 94, 614-631; Angew. Chem. Int. Ed. Engl. 1982, 21, 567-620.
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Thiazolethiones 19c, 19f, and 19k were prepared as racemates and unit cells were found to contain 1:1 mixtures of rotarners having (M) and (P) configuration at the N-O axis. Thus, (M) rotamers were arbitrarily chosen for the ellipsoid graphics in Figure 2. For 1-phenylpentenyl ester 19c, only (M/R) and (P/S) diastereomers were observed in the solid state. For stereochemical assignments along stereogenic axes, see: V. Prelog, G. Helmchen, Angew. Chem. 1982, 94, 614-631; Angew. Chem. Int. Ed. Engl. 1982, 21, 567-620.
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note
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Crystallographic data (excluding structure factors) for the structures reported in this paper have been deposited with the Cambridge Crystallographic Data Centre as supplementary publications nos. CCDC-109506 (9), -109507 (19c), -109509 (19f), and -109508 (19k). Copies of the data can be obtained free of charge on application to CCDC, 12 Union Road, Cambridge CB2 IEZ, U.K. [Fax: (internat.) + 44-1223/336-033; E-mail: deposit@ccdc.cam.ac.uk].
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