The synthesis of methoxy-, phenyl- and bromo-substituted indigos.

Entry	R1	R2		Time	Yield
1	OMe	H	8a	16 h	1a	58%
2	OMe	OMe	8b	20 h	1b	22%
3	H	OMe	8c	20 h	1c	30%
4	Ph	H	8d	20 h	1d	36%
5	H	Ph	8e	20 h	1e	28%
6	Br	H	8f	16 h	1f	35%
7	H	Br	8g	20 h	1g	32%