Table 1.

Dipeptide Amide Reduction.

Entry	Reagent	Equiva	Time (h)	Temp (°C)	Yield of Product (%)
1	LiAlH4	2	overnight	r.t.	b
2	LiAlH4	2	overnight	70	c
3	LiAlH4	10	2	r.t.	Traceb
4	LiAlH4	10	overnight	r.t.	c
5	AlH3	10	overnight	r.t.	17%b
6	AlH3	10	overnight	70	c
7	BH3	2	72	r.t.	b
8	BH3	2	overnight	70	b
9	BH3	5	2	70	c
10	BH3	10	30	r.t.	10%
11	BH3	10	10	−10 to 0	56%d

^amolar equivalents of reagent for relative to starting material

^bstarting material returned

^cstarting material decomposed.

^d83% based on consumed starting material