* Euro gains on expectations of rise in interest rates
* Global stocks buoyant; Wall Street ends higher
* Brent loses some earlier gains; gold hits record high
* Portugal requests EU aid after resisting bailout (Adds details)
By Leah Schnurr
NEW YORK, April 6 (Reuters) - The euro rose broadly on Wednesday a day ahead of an expected interest-rate hike in the euro zone, while Portugal's about-face decision to request financial aid from the European Union had little impact.
Lisbon had held out hope that by steadily meeting budget goals and cutting spending it could regain investor confidence and avoid a bailout. But Portugal's situation worsened last month after its government resigned, sending bond yields soaring and sparking a series of rating downgrades.
In announcing the decision in a televised statement, Portugal's prime minister did not specify what type of aid nor how much was being requested. For details see [
].The lack of market reaction suggested investors had already viewed the request for aid as a foregone conclusion. The euro was at a 14-month high against the dollar ahead of the expected interest rate hike from the European Central Bank on Thursday.
"In some ways it is a positive -- I think Portugal was in denial. On this side of the pond no one understood exactly how Portugal was going to be able to dig out of its problems without getting aid," said David Dietze, chief investment strategist at Point View Financial Services in Summit, New Jersey.
The slumping greenback and strife and political unrest in North Africa and the Middle East had sent Brent crude to a 2-1/2-year high above $123 a barrel before settling off its highs.
Among other commodities, gold racked up a record high and silver rallied to a 31-year high for a third consecutive day. Inflation fears have boosted precious metals, as oil and corn prices reached new peaks in recent days. A weaker greenback also makes dollar-priced assets more affordable to holders of the euro and other currencies.
Global equities gained on a generally brighter economic picture and U.S. stocks ended higher with help from tech shares. Volume on Wall Street was relatively light.
The Dow Jones industrial average <
> gained 32.85 points, or 0.27 percent, to end at 12,426.75. The Standard & Poor's 500 Index <.SPX> rose 2.91 points, or 0.22 percent, to 1,335.54. The Nasdaq Composite Index < > added 8.63 points, or 0.31 percent, to 2,799.82.World stocks, measured by the MSCI <.MIWD00000OOPUS>, gained 0.4 percent.
ECB RATE HIKE IN VIEW
The euro was strong throughout the day ahead of the rate decision and on speculation the ECB will also signal further interest rate rises.
Japan, on the other hand, looks set to lag other central banks in tightening and the yen slumped to an 11-month low against the euro and a six-month low against the dollar.
The euro <EUR=> was last up 0.8 percent at $1.4334 and against the yen <EURJPY> it was up 1.4 percent at 122.45 yen.
"The markets are very bullish with respect to the anticipated Trichet communique tomorrow. They expect quite strongly that the ECB is heading toward normalization of monetary policy," said Dean Popplewell, chief currency strategist at OANDA in Toronto, referring to ECB President Jean-Claude Trichet.
Spot gold <XAU=> hit a record $1,461.91 an ounce before easing to $1,458.90, up 0.6 percent. Silver <XAG=> rose as high as $39.75 an ounce. Brent crude <LCOc1> settled up 8 cents at $122.30 a barrel. U.S. crude <CLc1> settled up 49 cents at $108.83.
Earlier in the day, Portugal sold 1.005 billion euros ($1.43 billion) in 12- and six-month T-bills, but yields rose sharply from last month's auctions.
The 12-month T-bill yield rose to 5.902 percent from 4.331 percent in the auction three weeks ago, while the yield on the shorter maturity rose to 5.117 percent from 2.984 percent in a sale in early March.
Demand, however, outstripped supply by 2.6 times for the 12-month bills and by 2.3 times for the six-months. (Additional reporting by Chris Reese, Wanfeng Zhou, Frank Tang and David Sheppard; Editing by James Dalgleish)