. 2017 Sep 11;8(11):7637–7650. doi: 10.1039/c7sc00824d

Table 2. Comparisons of the barriers for formylation, methylation, and hydride transfer from [NHP]H and HCO₂^––[Si]H₂ to formamides ^a .

Substrate	Formylation	Methylation		Hydride transfer to formamide
		Hydride source		Hydride source
		[NHP]H	HCO₂^––[Si]H₂		[NHP]H	HCO₂^––[Si]H₂
	ΔG^≠	ΔG^≠	ΔG^≠		ΔG^≠	ΔG^≠
1a	21.8(23.7) ^b	25.1(25.1)	27.1(29.0)	1b	37.3(37.3)	36.7(38.6)
2a	29.3(31.2)			2b	46.5(46.5)	41.8(43.7)
3a	20.5(22.4)			3b	44.1(44.1)	43.6(45.5)
4a	18.8(20.7)			4b	43.3(43.3)	43.7(45.6)
5a	20.7(22.6)			5b	38.3(38.3)	36.5(38.4)
6a	17.3(19.2)			6b	42.5(42.5)	39.8(41.7)
7a	22.5(24.4)			7b	35.7(35.7)	34.6(36.5)

^aAll optimized structures of the transition states are displayed in Fig. S12.

^bValues in parentheses are the free energy barriers without corrections.

Table 2. Comparisons of the barriers for formylation, methylation, and hydride transfer from [NHP]H and HCO2––[Si]H2 to formamides a .