Hydroboration kinetics. 7. Kinetics and mechanism of the reduction of aldehydes and ketones with 9-borabicyclo [3.3. 1] nonane dimer

…, KK Wang, J Chandrasekharan

文献索引：Brown, Herbert C.; Wang, Kung K.; Chandrasekharan, J. Journal of the American Chemical Society, 1983 , vol. 105, # 8 p. 2340 - 2343

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被引用次数: 14

摘要

Conclusion Pseudobase B exists to the extent of 16% of the analytical thiamine concentration between pH 9.2 and 9.5 (Figure 8). This is explained by the fact that the difference between pK1= 8.9 and pK2= 9.70 is not high enough to impose a lower concentration of the B form in the basic media where the observed spectrum of thiamine consists of the contributions of the three different thiamine species, A+, B, and C (Figure 9) ...