A Quick, Clean and Green Synthesis of Methylenedioxyprecocene and other Chromenes over Basic Montmorillonite K10 Clay

Dintzner MatthewR.. Lyons ThomasW.. Akroush MichaelH.. Wucka Paul. Rzepka AdamT..

On page 787, Table 2 was truncated such that entries 4-7 did not appear. The intact table is as follows:

Table 2 Reaction Scope

Entry	R1	R2	R3	R4	R5	R6	Product distribution (%)
							9	7	Other
1	H	-O(CH2)O-		H	H	CH3	48 (9a)	11	41
2	H	-O(CH2)O-		H	H	H	7 (9b)	10	83
3	H	OCH3	OCH3	H	CH3	CH3	18 (9c)	68	14
4	Br	H	H	H	CH3	CH3	84 (9d)	6	10
5	H	CH3	H	H	CH3	CH3	97 (9e)	0	3
6	H	H	CH3	H	CH3	CH3	56 (9f)	0	44
7	H	H	H	H	CH3	CH3	70 (9g)	0	30

The editorial office apologizes for the omission.