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33645036043
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For straightforward syntheses of such compounds including their resolutions, see
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77955653914
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cis-Aminoalcohols were less effective than their trans-counterparts. For example, under standard conditions (1R,2S)-5b led to ent-2a with 28% ee: Dissertation at RWTH Aachen University
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Rantanen, T.1
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45
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77955665179
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note
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Basic extraction of the product followed by acidification and organic extraction yielded in pure product.
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47
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9244231110
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Enantiopure piperidinyl- and morpholinyl-substituted diamines were prepared by resolution with mandelic acid. For the synthesis of the racemate and an alternative method for the resolution, see
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(b) Enantiopure piperidinyl- and morpholinyl-substituted diamines were prepared by resolution with mandelic acid. For the synthesis of the racemate and an alternative method for the resolution, see: J. Gonzalez-Sabin, V. Gotor, and F. Rebolledo Chem. - Eur. J. 10 2004 5788 5794
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77955656343
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note
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2: 45% ee; MeCN: 14% ee.
-
-
-
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50
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77955662190
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note
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When benzylalcohol or ethanol was used instead of methanol similar enantioselectivities were observed, but the reaction rates decreased.
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51
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0033548378
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For preparations of 2h, 2i, and 2j by enzyme-catalyzed hydrolyses of meso-dimethylesters, see: (a) N.W. Boaz Tetrahedron: Asymmetry 10 1999 813 816
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57
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77955662475
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note
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In contrast, this behavior was not observed in quinine-accelerated opening of succinic anhydrides. There, the enantioselectivity increased when more catalyst was used.
-
-
-
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58
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77955664239
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note
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2: 13% ee.
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