10.1002/anie.201804794
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[20] The reaction using stronger bases gave no desired methylated product as
well. See Supporting Information for details.
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[23] Deuterium incorporation was determined by 1H NMR spectroscopic
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[25] The use of 2.5 equiv of Me3N–BH3 and extension of the reaction time to
11 h led to 2y in 68% isolated yield with the full consumption of 5. See
Scheme 2 and Supporting Information.
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