It was also the catalyst for two harsh bookings for Dindane and Tom Huddlestone.
It made no difference though as Dindane immediately linked up with substitute Kanu to make it 3-0.
Dindane dinked over Chris Kirkland to open the scoring before Frederic Piquionne raced clear to make it two.
Home keeper Wayne Hennessey then pulled off a fine save, low to his right, from Aruna Dindane's first-time strike.
Palacios was beaten for pace by Dindane and left Wiley with an easy decision to point to the spot.
Chelsea's Salomon Kalou and Portsmouth's Aruna Dindane were introduced off the bench by Ivory Coast in the second half.
But Pompey's numerical advantage told and Dindane nodded home a Jamie O'Hara cross at the death to earn a point.
Finally, however, Pompey's pressure told as the tireless Dindane nodded in at the back post from O'Hara's enticing deep centre.
Didier Drogba, Salamon Kalou, Aruna Dindane and Seydou Doumbia will be the strikers in the Elephants' line-up for South Africa.
But Dindane made no mistake just after the half-hour mark as the hosts finally made the most of their near-constant pressure.
Striker Aruna Dindane was Pompey's main culprit as he squandered three gilt-edged chances and capitalise on an early spell of pressure.
Pompey's Aruna Dindane saw his strike saved by Everton goalkeeper Tim Howard before Marouane Fellaini's close-range header was kept out by James' foot.
Portsmouth, meanwhile, picked up where they left off with the rampant Dindane seeing a powerful shot deflect off Titus Bramble and go just wide.
Piquionne was guilty of wastefulness in front of goal again after 55 minutes when he headed tamely at the exposed Gomes from Dindane's cross.
Experienced midfielder Brown, 32, has arrived for a nominal fee, while striker Dindane, 28, may sign a longer deal at the end of the season.
After the break striker Dindane stabbed home from close range and completed his treble from the spot after Kanu was blatantly tripped by Emmerson Boyce.
Dindane headed wide as he spurned another chance, while Paul Scholes had a shot deflected narrowly wide as the game developed into a sparky affair.
In previous matches Pompey had employed only one player in attack but Paul Hart showed his intent by selecting Tommy Smith and Dindane up front.
Dindane was denied by the legs of Craig Gordon, Jamie O'Hara almost went through on goal and Diop lashed into the side-netting from an acute angle.
Dindane deserved a hat-trick to cap a fine individual and team display, and he was duly given his opportunity from the spot when Boyce tripped Kanu late on.
Piquionne held on to his place in the side after scoring twice against the Potters, and he and Dindane wasted no time in causing the visiting defence problems.
Wilson Palacios hauled down Aruna Dindane and former Tottenham star Kevin-Prince Boateng added another layer of irony on this semi-final of many sub-plots by rifling home the penalty.
Ivorian Dindane then sent a 22-yard shot just wide and also headed past the post from 10 yards when unmarked as he met an inviting cross from Jamie O'Hara.
Strikers Dindane and Frederic Piquionne were proving increasingly problematic to the visitors and Pompey appealed for another penalty when McCartney appeared to trip Piquionne as he bore down on goal.
Dindane then turned provider three minutes into first-half injury time - slipping the ball into the path of Piquionne who managed to stay onside despite the Wigan defence's dangerously high line.
Dindane was played in behind the United defence by Prince-Boateng but took too long to get his shot off and United keeper Tomasz Kuszczak quickly came out to smother the danger.
Blackburn boss Sam Allardyce wants to tie up a deal for Portsmouth striker Aruna Dindane this week and then follow it up with a move in the summer for Stuttgart forward Cacau.
Substitute Aruna Dindane had an effort ruled out for offside in the closing stages but by then, as far as Ivory Coast's World Cup hopes were concerned, it was all a little irrelevant.
Dindane's feet clearly went from under him as he attempted to tackle Palacios, while the striker was then on the receiving end of a collision with Huddlestone, who was also betrayed by the pitch.
By that stage Cattermole had been given his marching orders for nasty-looking fouls on Dindane and Angelos Basinas but, in a rare attack, Sunderland almost doubled their lead when Kilgallon thundered a left-footed volley against the post.
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