Synlett 2005(06): 1046-1046  
DOI: 10.1055/s-2004-865196
ADDENDA
© Georg Thieme Verlag Stuttgart · New York

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



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Publication History

Publication Date:
23 March 2005 (online)

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.