Palladium-Catalyzed Synthesis of 3-Indolecarboxylic Acid Derivatives

Söderberg BjörnC.G.. Banini SergeR.. Turner MichaelR.. Minter AaronR.. Arrington AmandaK.. Synthesis  2008,  903 

<P>Entries 8-10 of Table 1 contained several errors: the yields of compounds 10 and 11 were switched and the nitrogen atom in the ring of compound 12 was misplaced. The correct entries are shown below:</P>

<TD VALIGN="TOP"> Entry^a,b </TD><TD VALIGN="TOP"> Nitroarene </TD><TD VALIGN="TOP"> Nitroalkane </TD><TD VALIGN="TOP"> Nitroalkene </TD><TD VALIGN="TOP"> Indole </TD><TD VALIGN="TOP">  8^c </TD><TD VALIGN="TOP">

</TD><TD VALIGN="TOP">

10 (5%) </TD><TD VALIGN="TOP">

21 (68%) </TD><TD VALIGN="TOP">

31 (79%) </TD><TD VALIGN="TOP">  9^c </TD><TD VALIGN="TOP"> </TD><TD VALIGN="TOP">

11 (57%) </TD><TD VALIGN="TOP">

22 (58%) </TD><TD VALIGN="TOP">

32 (96%) </TD><TD VALIGN="TOP"> 10^c </TD><TD VALIGN="TOP"> </TD><TD VALIGN="TOP">

12 (9%)
</TD><TD VALIGN="TOP"> not further examined </TD><TD VALIGN="TOP"> </TD><TD COLSPAN="20">

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</TD></TR><TR><TD VALIGN="TOP" COLSPAN="5"> ^a For procedural details, see the experimental section.
^b Isolated yields are shown in parentheses.
^c Compounds 10-12 were obtained from the same reaction in the yields given.
</TD>

Table 1 Synthesis of 3-Substituted Indoles

<P>In addition, compound 10 should be 11 and vice versa throughout the entire paper. On page 904, column 1, 7th/8th line from the bottom, the end of the sentence should read as follows:
”… three 3-nitropyridine products 10-12 in an ˜1:11:2 ratio (entries 8-10)." The correct name of compound 12 in the experimental section should be ”Butyl 2-[6-(tert-Butoxy)-3-nitro-2-pyridyl]ethanoate".The authors apologize for the mistakes.</P>